Let's Sum It vs Ten Frames
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Let's Sum It
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Part of the Indoor Recess Games CFS Bundle Want to have fun practicing math problems with THREE or FOUR addends?! Practice sums to 10.... all Target Sums in this game range from 2 to 10. The goal of the puzzle is to arrange the pieces so that the sum of each horizontal row equals the Target Sum. The current sum for each row is displayed on the far right side of each row in red until it matches the Target Sum... then, it turns green. The catch is you can only slide one piece at a time to the empty square. And, only pieces adjacent to the open square can be moved. The final puzzle piece is displayed below the grid and must be dragged to its correct location as the last move. The last piece must be placed even if it is zero. Adjust the range of Target Sums or play the Challenge mode where the Target Sum is NOT displayed. The TOP 15 Quickest Times are recorded in the app (not game center) when using that mode. Want to play this on your phone? Then, check out the Sum It Climb bundle.
Ten Frames
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Ten Frames ā math with smiles Educational math app for children aged 4ā7, built around the Ten Frames method. Short, cheerful sessions a child can play independently ā no reading required. About the method: Ten Frames is a foundational visual learning tool ā a simple frame of 10 cells used to teach early number sense. The method itself is included in mathematics curricula around the world. Children learn to instantly recognize quantities through visual grouping: a filled row is always 5, a full frame is always 10. These benchmarks become anchors for all future mental math. The result: stronger number sense, faster mental arithmetic, less math anxiety. What it covers: ⢠Counting to 10 ⢠Addition and subtraction within 10 ⢠Pairs that make 10 ⢠Doubles ⢠Fair sharing ⢠Visual memory ⢠9 Adventure worlds, 82 levels Made for little learners: ⢠A level is 5 problems and runs 2ā4 minutes ā a full session fits before dinner ⢠Voice narration in English, Romanian and German, so children who cannot read yet play on their own ⢠10 visual themes children choose themselves (Space, Ocean, Forest, Farm, Candy, Unicorn, Pixel, Slime, K-Pop, Monsters) ⢠36 stickers and 14 achievements keep effort rewarded, never punished ā a wrong answer costs nothing ⢠A parent dashboard to follow stars, streaks and progress Made for parents: ⢠No accounts and no sign-up ā hand your child the iPad and they start ⢠Nothing leaves the device. Progress is stored locally, and the app works fully offline ⢠No analytics, no ads, no tracking, no links out of the app ⢠Free to start: counting play is free forever, with free daily problems in every practice mode ⢠One single purchase unlocks everything ā every world, mode and theme. No subscription, ever Available in English, Romanian and German.
Screenshots
Verdict
The clearest difference is in-app purchases: Let's Sum It at none against Ten Frames's 1. Let's Sum It also leads on iOS requirement (10.0 vs 15.1). Ten Frames's advantage is update cadence (weekly vs every 3 months) and device support (3 vs 1). On price and ads there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Ten Frames sells 1 one-off in-app purchase. Let's Sum It asks for nothing beyond the download.
Let's Sum It ships an update every 3 months, Ten Frames weekly. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.
| Parameter | Let's Sum It | Ten Frames |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Weekly ā better |
| Ads | No | No |
| In-app purchases | No ā better | Yes |
| Devices | iPad | iPhone, iPad, iPod ā better |
| Requires iOS | 10.0 ā better | 15.1 |
| Further details ā not scored | ||
| Size | 37 MB | 111 MB |
| Age rating | 4+ | 4+ |
| Developer | Classroom Focused Software | M Crisan Sarbu |
In-app purchases
Let's Sum It
No in-app purchases
Ten Frames
- Ten Frames Premium$4.99









