Cash Book vs Monefy (2026): AI Logging vs the Simple Tap Log

Monefy asks for the amount and nothing else. That is the whole pitch, it has worked since long before Cash Book existed, and an average of 4.7 from about 6,700 US ratings says a lot of people still want exactly that. Want a free start on a phone, a tablet or Android? Choose Monefy. Want the fastest personal log, with voice and a camera doing the typing? Choose Cash Book.

Monefy comes from Reflective Technologies ApS in Denmark. No account, no sign-up, and the budget sits in one encrypted file on your device. The costs of that simplicity: every expense is typed, the free tier is capped in ways Monefy never spells out, the only Premium price the App Store lists is $59.99 with no billing period attached, and Monefy's own pages disagree about whether the free app shows ads.

Cash Book is the narrower product. Voice, receipt snap, Apple Pay auto-logging and a three-tap keypad all feed one list that stays on your iPhone, for $39.99 a year or $19.99 once after a 7-day trial. No free tier, no iPad or Android version, no bank sync. The longer read is the Monefy review.

Every Monefy fact here comes from Monefy's help center, terms, privacy policy and App Store listing, fetched on 12 September 2026. Open questions are listed at the end.

Feature table

Two rows are closer than they look. Monefy's 150-plus currencies beat Cash Book's 128 on the count, but the help center says you enter each rate by hand and a missing rate falls back to 1 to 1, which is a different product entirely. Recurring entries, on the other hand, Monefy has and Cash Book does not, at a daily, weekly, monthly, yearly or custom interval. That one is a straight win for Monefy.

The ads question, which nobody will settle for you

Monefy's help center says the app contains zero ad SDKs and shares no data with third-party advertisers. Monefy's privacy policy says the company may use Google AdSense and AdMob in the app, with personalized advertising served through the Google Mobile Ads SDK. The App Store privacy label lists third-party advertising identifiers. Recent App Store reviews of the free tier mention ads on every open.

Four sources, two answers. This page reports all four and picks no winner, because picking one would mean inventing a fact. If ads on the free tier would be a dealbreaker, install it and look; it takes a minute and it is the only reliable method available.

Pricing side by side

Monefy prices are from the US App Store purchase list and Monefy's terms of service on 12 September 2026.

Two lines from the small print are worth reading twice. Monefy's terms state that all sales are final and no refunds are offered. And recent App Store reviews describe a Premium purchase that did not carry over between Android and iPhone, which Monefy's materials neither confirm nor deny.

The arithmetic is short. Free tier fits you, Monefy costs nothing and Cash Book costs at least $19.99. Need Premium and Monefy's only listed price is $59.99 against Cash Book's $39.99 a year or $19.99 once. If that $59.99 is yearly, as reviews suggest, Cash Book's lifetime purchase costs a third of one Monefy year.

Where the data lives

Here the two apps are closer than anywhere else on the page. Monefy's help center says, "Your entire budget lives in a single, encrypted database file that stays inside Monefy's private sandbox on your device," and that "Monefy's servers never touch the file." The app collects no personal identifiers unless you email support, and the privacy policy says the company does not sell, trade or otherwise transfer your personally identifiable information to outside parties. On the core question of who holds your spending, Monefy answers the same way Cash Book does: you do.

Cash Book has no server that holds your transactions either. They live on the iPhone and, with the toggle on, in your own iCloud account under Apple's encryption. There is no Cash Book account. Voice clips and receipt photos go to an AI model through the studio's relay and are not kept after the response. No ads, no data selling, no contacts or location access. The full policy is on the privacy page.

Who picks which

Monefy is the answer if you want a free app today and can live inside caps nobody has published, if you use an iPad or an Android phone and want the same log on both through your own Google Drive or Dropbox, or if typing an amount is genuinely all you want to do and a donut chart is all the analysis you need. It is also the answer if you have used it for years, which many recent reviewers say they have. Habit beats features more often than feature tables admit.

Cash Book earns the switch in four cases:

• Logging itself is what has failed you before. You would rather say "12 euros lunch" than type it, and let Apple Pay taps log themselves.
• You want a price with a period attached to it, $39.99 a year or $19.99 once after a 7-day trial, and no ambiguity about ads.
• You want a net-worth number, per-tag budgets, and insights that show what changed against last month.
• You want export in CSV or Excel from the phone, and the interface in one of 26 languages.

Choosing a method before an app? How to track expenses on iPhone sets out what to log and how often.

What we could not verify

From Monefy's own materials, fetched on 12 September 2026, these points remain open:

• The billing period of the $59.99 Premium purchase, and whether a monthly or lifetime price exists; the terms say all three may be offered.
• The trial length, if a trial is offered at all, the free-tier account limit, and the full list of Premium-only features.
• The export file format. CSV and Excel are not mentioned.
• Whether the iOS free version currently shows ads; see the section above.
• iCloud sync, an Apple Watch app, widgets, voice entry, receipt scanning, Apple Pay automation, bank sync and a web app: none is described anywhere, which most likely means absent.

For an app whose appeal is that it hides nothing, Monefy publishes remarkably little. Cash Book's own gaps are at least easy to state: no bank sync, no shared budgets, no iPad, Android or web app, no widget, no Apple Watch app.

Get Cash Book on the App StoreFree for 7 days. $19.99 once for lifetime.

Get Cash Book on the App StoreFree for 7 days. $19.99 once for lifetime.