Comparison

Sub vs Interest Meter

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

Head to head
About

Sub

Features
Read full description

Clean up your monthly expenses with Sub-Scrub! Easily manage your subscriptions, track fixed costs, and prevent unwanted renewals with our privacy-focused tracker. [Why Sub-Scrub?] - Forgot to cancel a trial and got charged? - Don't know how much you spend on subscriptions in total? - Want to keep certain subscriptions private? Sub-Scrub solves these problems simply and securely. [Key Features] ◆ Visualize Your Expenses Automatically calculate your monthly and yearly total. Seeing the numbers is the first step to saving money. ◆ Renewal Reminders Get notified 3 days before a payment is due. Never pay for an unused service again. ◆ Secret Mode (Premium) Hide private subscriptions behind a passcode or FaceID. Includes a "Camouflage" feature to disguise notification messages as system updates, keeping your privacy secure even on the lock screen. ◆ Secure & Private All data is stored locally on your device. No external servers, no data leaks. [Get Started] Add your subscriptions now and start decluttering your fixed costs!

About

Interest Meter

Features
Read full description

Do you know exactly how much interest your savings are earning? Interest Meter is a clean, precise calculator for bank deposit interest. It supports both simple and compound interest, and automatically deducts withholding tax (default: Japan's 20.315%) so you can see your real take-home earnings. --- Free Features --- - Simple and compound interest calculation - Compound frequency: yearly, semi-annual, monthly, or **custom** (specify any number of compounding events per year — e.g. 4 quarterly, 52 weekly, 365 daily) - Flexible deposit period (1 to 50 years) - See pre-tax and after-tax interest at a glance - Year-by-year breakdown chart - Customizable tax rate (default: 20.315%) - Clean, intuitive design --- Premium Features (one-time purchase) --- - Switch the calculator to any of 9 foreign currencies (USD, EUR, GBP, AUD, CNY, HKD, SGD, KRW, THB) - Live exchange rates with a JPY conversion section in the result view - Ad-free experience across the entire app --- Who Is This For? --- - Anyone checking returns on fixed deposits - People who want to see compound interest in action - Savers who want to know their real after-tax yield - Anyone taking the first step toward smarter money management - Foreign-currency depositors who need quick JPY conversions Simple by design. Check your deposit interest today.

Screenshots

Sub3 screens
Interest Meter3 screens

Verdict

The call

The clearest difference is update cadence: Interest Meter at every 3 days against Sub's every 8 days. On price, ads, in-app purchases and device support 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. Sub sells 1 one-off in-app purchase and Interest Meter sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Sub ships an update every 8 days, Interest Meter every 3 days. The most recent releases landed on September 30, 2026 and September 9, 2026 respectively.

Scorecard1 real difference · 5 level
Sub versus Interest Meter: the parameters behind the verdict, then further details
ParameterSubInterest Meter
PriceFreeFree
Update frequencyEvery 8 daysEvery 3 days — better
AdsYesYes
In-app purchasesYesYes
DevicesiPhoneiPhone, iPad — better
Requires iOS17.616.0 — better
Further details — not scored
Size5 MB6 MB
Age rating9+4+
DeveloperTaisei MatsuoFuji Bit Inc.

In-app purchases

1 purchases

Sub

One-time1
  • Premium Plan$2.99
1 purchases

Interest Meter

One-time1
  • Premium$2.99

Questions

Is Sub free?
Sub is free to download, with in-app purchases available.
Is Interest Meter free?
Interest Meter is free to download, with in-app purchases available.
Do Sub or Interest Meter have ads?
Both Sub and Interest Meter show ads.
Which is updated more often, Sub or Interest Meter?
Sub ships an update every 8 days, and Interest Meter every 3 days. Most recently, Sub was updated on September 30, 2026 and Interest Meter on September 9, 2026.

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