Comparison

LittleGray Calculator vs Small Todo

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

Head to head
About

LittleGray Calculator

This advanced calculator handles large numbers and complex expressions with real-time calculations. Its columnar display shows the calculation process, and multiple keyboard layouts offer flexibility. Save and recall history, or sync across devices.

Highlights
  • High-precision large number calculations
  • Real-time custom function evaluation
  • Columnar display for process and results
  • Multiple keyboard layouts
  • History record function
  • iCloud cloud synchronization
  • Real-time voice input
Features
Read full description

LittleGray Calculator-Infinity is a high-precision large number scientific calculator that supports real-time calculations of custom functions and expressions. The columnar display window allows you to intuitively view the calculation process and calculation results of expressions. A variety of button layouts allow You quickly swipe to switch between the simple keyboard and the all-purpose keyboard. LittleGray Calculator-Infinity allows you to copy expressions from anywhere to the expression bar and modify the expressions by editing. It can also automatically generate historical records through the regular "=" sign of the calculator, and you can copy the parts you need in the historical records to The expression bar is recalculated. LittleGray Calculator-Infinity features: 1. Columnar layout 2. The column display window is displayed in multiple modes, and the size of the column window can be switched by clicking the column display window three times 3. Support large number calculation function, up to 9999 factorial and 9999^9999 power. 4. Unlimited display mode of large integer digits. 5. Support the four arithmetic operations of arbitrary precision of addition, subtraction, multiplication and division, and the maximum division is reserved to 1000 digits after the decimal point 6. Custom function formula function, functions can be classified. 7 multiple key modes: simple keyboard, function keyboard, hexadecimal\logic calculation keyboard, the keyboard can be switched by sliding left and right 8. History record function 9. iCloud cloud synchronization function 10. Real-time voice function 11. Multiple button color matching 12. More functions are waiting for you to discover

About

Small Todo

Break down overwhelming tasks into small, manageable steps with AI assistance. Enjoy a gamified experience with satisfying animations and customizable plans that adapt to your life. All processing happens locally for complete privacy and offline functionality.

Highlights
  • AI task decomposition
  • Gamified task completion
  • Customizable plans
  • Local AI processing
  • Offline functionality
  • Privacy-focused design
Features
Read full description

Small Todo is for the tasks you keep putting off. Buy it once and that's the end of it: no subscription, no ads, no account, and nothing extra no matter how much you use it. The AI runs on your iPhone, on Apple Intelligence or a model you download, so it still works with no signal. You can also bring your own API key to use an online model, or point the app at a server on your own Wi-Fi such as Ollama on your Mac (either way it connects directly; we can't see your data). Type the thing you're dreading, like "do laundry", "clean my desk", or "renew my passport", and an AI running entirely on your iPhone breaks it into steps so small they're hard to say no to. Get the laundry basket. Empty it onto the chair. You know, achievable things. Then comes the fun part: checking them off. A GAME, NOT A CHORE Every tick is a little celebration. The checkbox squashes and pops, particles burst, confetti cannons fire from the corners, and your phone gives a satisfying thump. Check steps off quickly and you build combos. Finish a list and the whole screen celebrates with you. (Reduce Motion is fully respected.) CHANGE OF PLANS? JUST SAY SO Need to tweak the plan? Type it right into the list, like "my basket is already empty" or "add a little reward at the end", and the steps reshape themselves. What you've already done stays done. IT PLANS AROUND YOUR LIFE Keep small facts in Memory, like "I live in a second-floor walk-up" or "I won't touch coriander", and Small Todo takes them into account every time it breaks a task down. Everything in Memory is yours to see, edit, or delete. COMPLETELY PRIVATE, FULLY OFFLINE Everything happens on your device. With Apple Intelligence or the on-device model, your todos, your requests, your Memory: none of it ever leaves your phone. No account, no cloud, no tracking, no ads. It even works in airplane mode. CHOOSE YOUR MODEL Use Apple Intelligence, or download an open-weights model (Qwen3.5, recommended) that runs locally instead. Your pick, in Settings. A SOFTER KIND OF SOFTWARE No harsh red badges. No guilt-trip streaks. Just a soft, plump, hand-drawn design, encouraging words, and the quiet satisfaction of watching a scary task become a list of easy ones. Small Todo requires Apple Intelligence (iPhone 15 Pro or newer) or a device capable of running the downloadable on-device model.

Screenshots

LittleGray Calculator4 screens
Small Todo4 screens

Verdict

The call

The clearest difference is review sentiment: Small Todo at 100% against LittleGray Calculator's 0%. Small Todo also leads on update cadence (every 2 days vs every 4 months) and price ($0.99 vs $2.99). LittleGray Calculator's advantage is iOS requirement (8.0 vs 26.0). On ads, in-app purchases, monetization model and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

LittleGray Calculator costs $2.99 and Small Todo $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

LittleGray Calculator ships an update every 4 months, Small Todo every 2 days. The most recent releases landed on November 2, 2026 and November 1, 2026 respectively.

Scorecard4 real differences ยท 4 level
LittleGray Calculator versus Small Todo: the parameters behind the verdict, then further details
ParameterLittleGray CalculatorSmall Todo
Price$2.99$0.99 โ€” better
Positive reviews0.0% of reviews100.0% of reviews โ€” better
Update frequencyEvery 4 monthsEvery 2 days โ€” better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS8.0 โ€” better26.0
Further details โ€” not scored
Size16 MB39 MB
Age rating4+4+
Developerๅณป ๆจZhiqi Pan

Customer experience

LittleGray Calculator

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Small Todo

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

LittleGray Calculator

No in-app purchases

None

Small Todo

No in-app purchases

Questions

Is LittleGray Calculator free?
LittleGray Calculator costs $2.99, with no in-app purchases.
Is Small Todo free?
Small Todo costs $0.99, with no in-app purchases.
Do LittleGray Calculator or Small Todo have ads?
Neither LittleGray Calculator nor Small Todo shows ads.
Which is updated more often, LittleGray Calculator or Small Todo?
LittleGray Calculator ships an update every 4 months, and Small Todo every 2 days. Most recently, LittleGray Calculator was updated on November 2, 2026 and Small Todo on November 1, 2026.

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