Numbla vs Grader+
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Numbla
A math-based game challenges players to identify multiples of a given number by selecting connected tiles. Progress through increasingly difficult levels with more tiles and complex numbers before the timer expires. Correctly identified tiles disappear, making way for new ones.
- Identify multiples of numbers
- Select touching tiles
- Timed gameplay
- Increasing difficulty levels
- New tiles fall after matches
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Numbla is a Maths based game that tests your skills on identifying multiples of numbers. The objective of this game is to select a series of touching tiles that are multiples of the number that appears at the top of the screen before the timer runs out. Each time tiles are correctly identified they will disappear and new tiles will fall down. As you progress through the levels the numbers become a little more challenging and the number of tiles that appear on the screen increases.
Grader+
This app helps educators quickly grade assignments and tests. It allows for automatic percentage calculation, sorting of results, and statistical displays. Scores can be archived and exported for easy record-keeping.
- Automatic percentage calculation
- Sort results by name or score
- Display score statistics
- Archive scores
- Export results to CSV
- Dark mode support
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Other features include: * Enter the maximum score on the test to automatically calculate percentages * Sort results by name or by score * Display statistics for scores * Archive scores for reference * Export results to a CSV file for easy importing to a spreadsheet * Dark mode
Screenshots
Verdict
Numbla and Grader+ are too close to call on the numbers: across 7 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Numbla ships an update every 3 months, Grader+ every 2 months. The most recent releases landed on October 13, 2026 and October 4, 2026 respectively.
| Parameter | Numbla | Grader+ |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | — | 2 — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Alistair Shaw | Peter Davison-Reiber |
Customer experience
Numbla
Grader+
In-app purchases
Numbla
No in-app purchases
Grader+
No in-app purchases
