Comparison

thumbzonekeyboard vs Stacked

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

Head to head
About

thumbzonekeyboard

This keyboard app is optimized for one-thumb typing, offering customizable layouts for comfort and speed. It features a smart design that reduces finger movement and includes a built-in calculator for quick calculations without leaving the keyboard.

Highlights
  • Thumb-optimized layout
  • Standard, left-handed, and mirror modes
  • Smart vowel/consonant zoning
  • Reduced finger movement
  • Built-in calculator
  • No learning curve
Features
Read full description

This keyboard is designed for real mobile users who type with one thumb. It supports standard mode, left-handed mode, and mirror mode so you can choose the layout that feels most comfortable for your hand. The smart thumb layout reduces finger movement and helps you type faster with less effort. * Vowels and consonants are placed in separate zones, and consonants are grouped by similar pronunciation to make keys easier to find with one thumb. There is no learning curve. You can start typing naturally from the first use. It also includes a built-in calculator. You can quickly calculate numbers without leaving the keyboard, making it useful for shopping, work, and daily tasks. Use it for just 5 minutes a day for one week, and you will not be able to go back to the old QWERTY keyboard. Switch modes anytime depending on how you hold your phone. Whether you are right-handed or left-handed, this keyboard adapts to you. Designed for speed, comfort, and real-world use on smartphones.

About

Stacked

Features
Read full description

Stacked turns your phone into a fast, clean document scanner built for everyday use. Scan anything in seconds, edit with precision, and export your files exactly how you need them โ€” all in a simple, distraction-free interface. Whether you're organizing notes, saving receipts, or scanning multiple pages at once, Stacked keeps everything smooth and efficient. Scan Smarter Capture high-quality scans using your camera. Automatically detect pages and enhance them for a clean, readable result. Perfect for scanning: โ€ข Documents โ€ข Notes โ€ข Receipts โ€ข Contracts โ€ข IDs โ€ข Any paper you need to digitize Batch Scan with Ease Scan multiple pages in one go and keep everything organized in a single stack. No need to scan one page at a time, build full documents effortlessly. Edit and Customize Crop, adjust, and fine-tune your scans. Reorder pages, delete unwanted ones, and create polished documents in seconds. Export Your Way Save your scans as PDFs or images. Share or store them wherever you want with just a few taps. Private by Design Hide sensitive documents and protect them using Face ID. Keep your personal files secure and accessible only to you. Simple, Fast, Stacked. Support: support@pullapps.app Privacy Policy: https://pullapps.app/privacy-policy-stacked Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

thumbzonekeyboard4 screens
Stacked4 screens

Verdict

The call

The clearest difference is iOS requirement: thumbzonekeyboard at 18.5 against Stacked's 26.0. On price, update cadence, ads and in-app purchases 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

thumbzonekeyboard ships an update every 6 days, Stacked every 3 days. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

Scorecard1 real difference ยท 7 level
thumbzonekeyboard versus Stacked: the parameters behind the verdict, then further details
ParameterthumbzonekeyboardStacked
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyEvery 6 daysEvery 3 days โ€” better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeโ€”
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS18.5 โ€” better26.0
Further details โ€” not scored
Size9 MB15 MB
Age rating4+4+
DeveloperJAESIK YOUNPull Apps

In-app purchases

None

thumbzonekeyboard

No in-app purchases

None

Stacked

No in-app purchases

Questions

Is thumbzonekeyboard free?
thumbzonekeyboard is free to download, with no in-app purchases.
Is Stacked free?
Stacked is free to download, with no in-app purchases.
Do thumbzonekeyboard or Stacked have ads?
Neither thumbzonekeyboard nor Stacked shows ads.
Which is updated more often, thumbzonekeyboard or Stacked?
thumbzonekeyboard ships an update every 6 days, and Stacked every 3 days. Most recently, thumbzonekeyboard was updated on October 14, 2026 and Stacked on October 11, 2026.

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