Comparison

Flux vs zero

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Flux

This privacy-focused expense tracker operates entirely offline, keeping your financial data secure on your device. It uses on-device AI for receipt scanning and offers smart budgeting tools with clear visualizations. Log expenses hands-free with Siri shortcuts and monitor spending with home screen widgets.

Highlights
  • 100% Offline operation
  • AI-powered on-device receipt scanner
  • Complete data privacy
  • Smart budget tracking with visualizations
  • Siri Shortcuts integration
  • Home & Lock Screen Widgets
  • Multi-currency support
Features
Read full description

The Only 100% Offline AI Expense Tracker. Your Data Never Leaves Your iPhone. Flux is the privacy-first expense tracker and budget manager that works completely without the internet. No accounts. No cloud sync. No tracking. Just intelligent financial control — entirely on your device. Unlike apps that upload your spending data to remote servers, Flux keeps everything local using Apple's SwiftData. Every transaction, every budget, every AI conversation stays on your iPhone. Always. WHY FLUX? • 100% Offline — Zero internet required, ever • On-Device AI — Powerful features without cloud dependency • Face ID Lock — Auto-blurs sensitive numbers when you switch apps • Lightning Fast — No waiting for servers • Lifetime Unlock — Own it once, forever AI RECEIPT SCANNER Point your camera at any receipt. Flux's on-device OCR instantly reads the amount, date, and merchant — even in local decimal formats. No upload. No wait. Works globally. MULTI-WALLET & ACCOUNTS Don't put all your money in one basket. Create distinct wallets for Cash, Credit Cards, and Bank Accounts. Easily track transfers between them to know exactly where your money sits. SAVING GOALS Set targets for your dream purchases, vacations, or emergency funds. Watch your savings grow with clean progress indicators. SMART BUDGET TRACKING Set spending limits with clean progress rings. Budget cards show real-time percentage breakdowns. Edit limits on the fly directly from the list. AI FINANCE ASSISTANT & MEMORY Ask natural questions: "Am I over budget this month?" Get instant answers. Every conversation is saved in the Archive. (Premium) RECURRING TRANSACTIONS & FORECASTS Automate weekly or monthly bills. Flux analyzes your history to predict future expenses. Stay ahead of overspending. CALENDAR HEATMAP A GitHub-style contribution graph for your income and expenses. Spot expensive weeks and build better financial habits. MULTI-CURRENCY Track 40+ currencies (USD, EUR, GBP, TRY, AED, and more). Switch your base currency instantly. Built for international travelers. SEAMLESS IOS INTEGRATION • Home & Lock Screen Widgets • Siri Shortcuts ("Hey Siri, add $50 to groceries") • Face ID / Touch ID App Lock Start free for 7 days. Then $2.99/month or $24.99/year. Or unlock everything forever with the one-time Lifetime purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

zero

This app helps you track expenses and manage money owed without requiring an account or internet connection. It offers a clean interface for quick entry, custom categories, and visual reports to understand your spending. Your financial data remains private and is stored locally on your device.

Highlights
  • Offline expense tracking
  • No account required
  • Track money owed and lent
  • Customizable categories
  • Visual spending reports
  • Data export and import
  • Privacy-focused local storage
Features
Read full description

WHY zero? Most finance apps want your data. zero wants nothing. • No account required: start tracking in seconds • No internet needed: works 100% offline • No ads, no subscriptions: completely free • No data collection: your finances stay private TRACK EXPENSES EFFORTLESSLY Add expenses in seconds with a clean, minimal interface designed for daily use. • Quick entry with amount, title & category • Custom categories with icons and colors • Date picker for past expenses • Notes and descriptions for every transaction MANAGE MONEY YOU OWE & ARE OWED Never forget an IOU again. • Track money you lent and borrowed • Organize by person with custom icons • See total balances at a glance BEAUTIFUL REPORTS & INSIGHTS Understand your spending with clear, visual reports. • Monthly expense breakdown with pie charts • Daily spending calendar heatmap • Category-wise analysis • Filter by month and year DESIGNED FOR YOU • Dark mode & light mode • Multiple currency support • Export & import your data • Fast, lightweight, battery-friendly PRIVACY BY DESIGN Zero is built on a simple principle: your money, your business. All data is stored locally on your device. No servers, no cloud, no sync, no analytics, no third-party SDKs. Your financial data never touches the internet. Download zero and take control of your finances, privately.

Screenshots

Flux4 screens
zero4 screens

Verdict

The call

The clearest difference is rating: Flux at 4.3 against zero's 3.8. Flux also leads on review sentiment (100% vs 67%). zero's advantage is in-app purchases (none vs 3) and device support (3 vs 1). On price, ratings volume, update cadence and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Flux sells 3 in-app purchases, starting at $2.99 per month. zero asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Flux holds the better App Store score, 4.3 against 3.8. Both are backed by a comparable volume of ratings — 3 and 4 respectively. Written reviews point the same way: 100% of Flux's written reviews are positive against 67% of zero's.

UpkeepUpdate frequency

Flux ships an update fortnightly, zero every 2 weeks. Both last shipped on November 5, 2026.

Scorecard6 real differences · 4 level
Flux versus zero: the parameters behind the verdict, then further details
ParameterFluxzero
PriceFreeFree
Rating4.3 (3 ratings) — better3.8 (4 ratings)
Positive reviews100.0% of reviews — better66.7% of reviews
Number of ratings34 — better
Update frequencyFortnightly — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS18.615.1 — better
Further details — not scored
Size10 MB31 MB
Age rating4+4+
DeveloperAli Ihsan GunesLossless Protocols

Customer experience

Flux

All ratings3 ratings
Positive66.7%
Neutral33.3%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

zero

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

3 purchases

Flux

Subscriptions2
  • Monthly Plan3 Days trial$2.991 Month
  • Yearly Plan7 Days trial$24.991 Year
One-time1
  • Flux Premium Lifetime$44.99
None

zero

No in-app purchases

Questions

Is Flux free?
Flux is free to download, with in-app purchases available.
Is zero free?
zero is free to download, with no in-app purchases.
Which has better reviews, Flux or zero?
Flux is rated higher. Flux averages 4.3 out of 5 from 3 ratings, while zero averages 3.8 from 4 ratings.
Do Flux or zero have ads?
Neither Flux nor zero shows ads.
Which is updated more often, Flux or zero?
Flux ships an update fortnightly, and zero every 2 weeks. Most recently, Flux was updated on November 5, 2026 and zero on November 5, 2026.

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