Introduction: The Digital Banking Revolution
Traditional UK banks have dominated for centuries, but the last decade has seen a seismic shift. Fintech apps and digital-first banks now control 30% of UK retail banking , and that number grows monthly. Why? Because they offer what legacy banks don't: simplicity, transparency, better interest rates, and apps that don't feel like they were designed in 2003.
In 2026, you have real choices. You can have a fully-featured bank account in your pocket, with zero monthly fees, in minutes. No branch visits. No paperwork. Just you, your phone, and a bank that actually works for your life.
But which one should you choose? We've tested the five major UK digital banking apps, evaluated their features, compared their fees, and ranked them for different use cases. Let's dive in.
1. Monzo: The Popular All-Rounder
Quick Overview
Cost: Free | Target User: Everyday budgeters | Account Type: Fully FCA-regulated | Users: 8.5+ million
Monzo revolutionised UK banking when it launched and remains the most downloaded banking app in the country. Its appeal is simple: beautiful design, instant notifications, and a community-first approach.
Key Features
- Real-time transaction notifications and categorisation
- Instant peer-to-peer payments via Monzo-to-Monzo transfers
- Savings pots with no interest (sadly)
- Budget tracking (built-in spending categories)
- Customer support via in-app chat (24/7)
- Global spending tracker (see totals across months)
- Card controls (freeze/unfreeze, spending limits per category)
- Monzo Premium tier with insurance, lounge access, £1.5% savings interest
Pros
- Intuitive, beautiful app design that's genuinely enjoyable to use
- Fastest peer-to-peer payment system (Monzo to Monzo is instant)
- Strong customer community and active on social media
- Excellent customer support response times
- Huge network of fee-free ATM withdrawals
Cons
- No interest on savings pots (other apps beat them here)
- Savings pot interest only with Premium (£9.99/month)
- Limited overdraft management compared to competitors
- Premium tier required for most valuable features
Best For
Budget-conscious millennials and Gen Z who want a modern banking experience with excellent design. If you enjoy seeing your money visually categorised and want a bank that feels like a friend, Monzo is your app.
✓ The Verdict
Still excellent, but Premium (£9.99/month) is now almost essential to get genuine value from savings interest. Free tier is solid but slightly underwhelming compared to newer competitors.
2. Starling: Premium Features at No Cost
Quick Overview
Cost: Free | Target User: Money-savers | Account Type: Fully FCA-regulated | Users: 3.5+ million
Key Features
- Interest on savings pots (rates vary, currently 2-3%+)
- Flexible savings pots with automatic saving rules
- Round-ups to savings pot (spend £4.50, round to £5 and save 50p)
- Goals feature (save for specific targets)
- Tax-free savings account (Starling Individual Savings Account)
- Fee-free spending abroad with no FX markup
- Business account available (separate app, useful if self-employed)
- API integration for budgeting apps
Pros
- Best savings interest rates without paying subscription fees
- Genuinely useful round-up feature accelerates savings
- Business account functionality is excellent for freelancers
- Tax-free saving through integrated ISA account
- Zero foreign transaction fees (great for travelers)
Cons
- App design is functional but less stylish than Monzo/Chase
- Limited peer-to-peer payment features (slower than Monzo)
- Customer support chat availability more limited
- Community features aren't as developed as Monzo
Best For
Serious savers and self-employed professionals. If you actually want to earn interest on your savings without paying subscription fees, Starling delivers what others promise.
✓ The Verdict
The most underrated app on this list. Starling doesn't have Monzo's marketing budget, but it delivers better actual value for savers and businesses. Highly recommended if you want genuine interest returns.
3. Chase: The New Challenger
Quick Overview
Cost: Free | Target User: Cashback seekers | Account Type: Fully FCA-regulated | Users: 2.5+ million (growing fast)
Key Features
- 1% cashback on all UK spending (up to £15/month cap)
- £0 monthly fee—cashback is genuinely free
- Smart notifications and spending insights
- Savings pots (but no interest)
- Fee-free overdraft (within limit)
- Fee-free spending abroad with no FX markup
- Premium tier option (£5/month for enhanced features)
- Unique "Save the Change" feature (round-up to nearest pound)
Pros
- 1% cashback is genuinely valuable—£180/year if you spend £15,000
- Cashback requires no activation or special categories—it's automatic
- Clean, modern app interface
- Competitive overdraft allowance
- Strong backing (JP Morgan Chase's US arm)
Cons
- Cashback capped at £15/month (£180/year max)
- No savings interest (savings pots earn nothing)
- Limited customer support channels (phone support limited)
- Smaller community compared to Monzo
Best For
High-volume spenders who want genuine cashback without effort. If you spend £15,000+ per year, Chase's 1% cashback ($180+) adds up significantly. This is money for doing what you'd do anyway.
✓ The Verdict
The rising star. Chase is exactly what challenger banks should be: simple, valuable, and focused. The 1% cashback is real value, not marketing fluff.
4. Revolut: Travel-Focused Powerhouse
Quick Overview
Cost: Free (Standard) or £7.99-13.99/month (Premium) | Target User: Frequent travelers | Account Type: FCA-regulated (from 2023) | Users: 25+ million worldwide
Key Features
- Multi-currency account (hold 30+ currencies)
- Real FX rates—no markup, zero foreign exchange fees
- Cryptocurrency buying and trading
- Stocks and ETF investing (fractional shares)
- Vaults (savings pots with interest)
- Metal card (Premium tier) with travel insurance
- Global spending dashboard in 30 currencies
- ATM withdrawals worldwide (free on Premium)
Pros
- Unbeatable for frequent international travelers
- Multi-currency accounts eliminate FX fees
- Integrated crypto and stock trading (educational tool)
- Premium tier offers exceptional travel insurance
- Largest user base globally (strong ecosystem)
Cons
- Free tier is limited; Premium is nearly essential
- FCA regulation came late (initially unregulated)
- Crypto/trading features aren't for everyone
- Customer support can be slow on complex issues
- Feels more like a fintech platform than a "proper bank"
Best For
Frequent international travelers, remote workers, and digital nomads. If you travel quarterly or more, Revolut's multi-currency account and travel insurance justify the Premium subscription (£7.99+/month).
✓ The Verdict
Unmatched for travel, but not a primary bank for most UK residents. Best used alongside a main account like Monzo or Chase. Premium (£7.99/month) is worth it for travelers; Standard tier is too limited.
5. Kroo: For Savers and Spenders
Quick Overview
Cost: Free | Target User: Balanced budgeters | Account Type: Fully FCA-regulated | Users: 500k+ (smaller community)
Key Features
- Single account for both spending and saving
- Savings interest (currently 2-3% depending on pot)
- Automatic savings rules (% of income, round-ups, scheduled deposits)
- Joint account support (family or partner accounts)
- Zero forex fees abroad
- Beautiful dashboard showing savings progress visually
- Goals tracking (save for house, holiday, etc.)
- Debt payoff tools (snowball/avalanche calculators built-in)
Pros
- Best visual feedback for savings goals (genuinely motivating)
- Competitive interest rates without subscription fees
- Excellent for couples managing joint finances
- Built-in debt payoff calculators (The Penny Teller approves!)
- Truly innovative approach to savings psychology
Cons
- Smaller user base means less vibrant community
- Less marketing—many people haven't heard of it
- Customer support less established than Monzo/Starling
- Some features still in development
Best For
Couples and families managing money together, plus anyone serious about tracking savings progress. Kroo's visual savings tracking is genuinely the best in the industry—you see your goal getting closer daily.
✓ The Verdict
The most underrated app on this list. If you're couple saving together or serious about reaching financial goals, Kroo's psychological approach to saving is genius. Recommended for goal-oriented savers.
Complete Comparison Table
| Feature | Monzo | Starling | Chase | Revolut | Kroo |
|---|---|---|---|---|---|
| Base Monthly Cost | Free | Free | Free | Free | Free |
| Savings Interest | Premium only (£9.99/mo) | Yes (2-3%+) | None | Limited | Yes (2-3%) |
| Cashback/Rewards | None | None | 1% (capped) | None | None |
| Multi-Currency | No | No | No | Yes (30+) | No |
| FX Fees Abroad | Free | Free | Free | Free | Free |
| Overdraft | Available | Available | Free allowance | Limited | Available |
| Crypto Trading | No | No | No | Yes | No |
| Stock Trading | No | No | No | Yes | No |
| Joint Account | Yes | Yes | No | Limited | Yes |
| FCA Regulated | Yes | Yes | Yes | Yes (from 2023) | Yes |
Best Apps for Different Purposes
Best for Budgeting & Spending
Winner: Monzo - The best visual breakdown of where your money goes, category-based budgets, and spending trends. If you want to see at a glance what you spent on coffee this month, Monzo is unbeatable.
Best for Saving Interest
Winner: Starling - Consistently offers 2-3%+ interest on savings pots without requiring a subscription. For serious savers, this is the clear choice.
Best for Cashback
Winner: Chase - 1% cashback on all spending, automatic, no categories to track. If you spend £15,000/year, that's £150 free money annually.
Best for Travel
Winner: Revolut - Multi-currency accounts, real FX rates, and travel insurance (Premium). Unbeatable if you travel internationally more than twice per year.
Best for Couples Managing Money
Winner: Kroo - Joint account support combined with visual savings goals makes it perfect for partners saving together for a house, wedding, or holiday.
Best Overall (Primary Account)
Winner: Starling or Chase (depending on priorities)
- Choose Starling if you want to save money and earn interest
- Choose Chase if you spend a lot and want cashback
How to Choose Your App
Here's a simple decision tree:
- Do you travel internationally 3+ times per year? → Revolut Premium
- Do you want to earn interest on savings without paying fees? → Starling
- Do you spend £15,000+ per year and want cashback? → Chase
- Are you managing money with a partner? → Kroo
- Do you want the best app design and user experience? → Monzo
💡 Pro Tip: Have Multiple Accounts
The best strategy is having a primary account (Starling or Chase) plus a secondary app for specific purposes. For example: Chase for everyday spending (cashback), Starling for savings (interest), Revolut for travel. Opening accounts takes 15 minutes each—there's no rule saying you can only have one.
Frequently Asked Questions
Are these apps safe? What about FCA protection?
Yes, all five are fully FCA-regulated and covered by the Financial Services Compensation Scheme (FSCS). Your money is protected up to £85,000 per institution, just like traditional banks. Revolut was unregulated initially but gained FCA authorisation in 2023.
Can I get a cheque book?
Monzo and Starling offer cheque books (though they're becoming obsolete). Chase, Revolut, and Kroo don't. If you need cheques, Monzo or Starling are your best bets.
Do I still need a traditional bank?
Mostly no. These apps handle 99% of banking needs. You might keep a traditional bank account if you receive cheques regularly or need a mortgage (traditional banks still have advantages in mortgage lending).
Which app has the best customer support?
Monzo offers the fastest in-app chat support. Starling is solid but slower. Chase and Kroo are adequate but less responsive. Revolut's support is the weakest—avoid if you need quick issue resolution.
Can I use multiple apps at once?
Absolutely—and you should. No rule says you can only have one account. Many people use Chase for spending (cashback), Starling for savings (interest), and Revolut for travel.
