Comparison

RenjiCalc vs MIT App

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

Head to head
About

RenjiCalc

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“500W for 6 minutes… so how long in my 800W microwave?” Solve that confusion instantly. From conversion to timer start, everything is smooth and effortless. Make your microwave more useful and easier to use. 【Features】 ・Easy wattage conversion: Enter the original wattage and heating time, and it instantly calculates the right time for your microwave. ・One-tap timer from history: Select frequently used items from history and start the timer without recalculating. ・Lock screen progress: Supports the latest iOS Live Activities, so you can check remaining time at a glance on the Lock Screen or Dynamic Island, even when your iPhone is locked. ・Multiple microwave presets: Save and switch between different microwaves, such as one at home and one at work. 【Recommended for】 ・People who often eat frozen foods or convenience store meals ・People who use high-power microwaves (700W/800W and above) ・Anyone who has ever overheated food by guessing the heating time

About

MIT App

Features
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Every day, we live surrounded by countless tasks. But what truly matters should always be just one thing. MIT is a simple app that helps you decide on one “most important thing” for today and focus on it. • In the morning, choose today’s MIT • At night, look back and record it That’s all. A quiet habit. It is not a checklist or a typical to-do app. MIT is an app for choosing what you value. Main features • Add one MIT per day • Reminders • Review in a calendar • Streak tracking So you don’t lose sight of your “one thing” in busy days.

Screenshots

RenjiCalc4 screens
MIT App4 screens

Verdict

The call

The clearest difference is in-app purchases: RenjiCalc at none against MIT App's 2. MIT App's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement 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. MIT App sells 2 one-off in-app purchases. RenjiCalc asks for nothing beyond the download.

UpkeepUpdate frequency

RenjiCalc ships an update fortnightly, MIT App every 9 days. The most recent releases landed on September 16, 2026 and September 9, 2026 respectively.

Scorecard2 real differences · 4 level
RenjiCalc versus MIT App: the parameters behind the verdict, then further details
ParameterRenjiCalcMIT App
PriceFreeFree
Update frequencyFortnightlyEvery 9 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
DevicesiPhoneiPhone, iPad — better
Requires iOS18.0 — better18.6
Further details — not scored
Size11 MB59 MB
Age rating4+4+
Developerken hasegawafromKK

In-app purchases

None

RenjiCalc

No in-app purchases

2 purchases

MIT App

One-time2
  • Support Development$0.99
  • Forgive Past Days$0.99

Questions

Is RenjiCalc free?
RenjiCalc is free to download, with no in-app purchases.
Is MIT App free?
MIT App is free to download, with in-app purchases available.
Do RenjiCalc or MIT App have ads?
RenjiCalc shows ads; MIT App does not.
Which is updated more often, RenjiCalc or MIT App?
RenjiCalc ships an update fortnightly, and MIT App every 9 days. Most recently, RenjiCalc was updated on September 16, 2026 and MIT App on September 9, 2026.

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