iSometric 3D Form vs Modstack
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
iSometric 3D Form
This game challenges players to assemble 3D geometric shapes by correctly aligning front, left, and top views. It offers numerous levels with increasing difficulty, requiring careful observation to form the isometric figures.
- Multiple difficulty levels
- Form 3D figures
- Use front, left, and top views
- Hidden line challenges
- All levels are free
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Do you like geometric form? With iSometric Form you can enjoy a lot of levels of varying difficulty and through their views (Front, Left and Top) forming a 3D figure. You'll have to be selecting the various tabs to form the figure. Look view correctly, because some line are hidden. Will you be able to form all isometric forms?. All levels free.
Modstack
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Modstack is a tactile programming puzzle about making big moves with a small set of commands. Place Move and Turn tiles into a program, stack modifiers to change what they do, then run your machine. Watch the robot execute each step, learn from the result, and compress your solution until it reaches par. WHAT YOU GET - 36 handcrafted campaign circuits across six chapters - A gentle visual introduction to programs, repetition, and mirroring - Ordered relays, switches, gates, and precision Expert Circuits - A new Easy, Medium, and Hard Daily Circuit every day - Layered hints that nudge without giving away the whole solution - Offline play with progress stored on your device - Purpose-built sound and haptic feedback - No ads, no account, and no tracking The Foundations chapter and Easy Daily are free. A single Full Game Unlock opens the remaining 30 campaign circuits plus Medium and Hard Daily. There is no subscription.
Screenshots
Verdict
The clearest difference is in-app purchases: iSometric 3D Form at none against Modstack's 1. Modstack's advantage is update cadence (every 8 days vs monthly). On price, ads, 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
Both are free to download. Modstack sells 1 one-off in-app purchase. iSometric 3D Form asks for nothing beyond the download.
iSometric 3D Form ships an update monthly, Modstack every 8 days. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.
| Parameter | iSometric 3D Form | Modstack |
|---|---|---|
| Price | Free | Free |
| Rating | 3.2 (6 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Monthly | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 279 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Jose Luis Lopez Alcazar | NovoBuild LLC |
In-app purchases
iSometric 3D Form
No in-app purchases
Modstack
- Unlock Full Modstack$3.99
