GenZD Zero vs ModifAi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GenZD Zero
Run classic idTech 1 games and community mods on your iOS device with modern rendering capabilities. Enjoy enhanced graphics, custom controls, and controller support. You must provide your own game files.
- idTech 1 game engine support
- Modern 3D rendering
- Widescreen graphics
- Dynamic lighting
- Customizable touch controls
- Game controller support
- Local multiplayer
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GenZD Zero supports running games using the open-source idTech 1 game engine for iOS, and supports running its "WAD" game files as well as community-developed "MOD" files, all rendered natively using modern technology. It supports several capabilities beyond the original engine, such as modern 3D rendering, widescreen graphics, dynamic lighting, a fully scriptable environment, and much much more. Please note that GenZD Zero does not include content and they must be provided by you. Please use the Files app to move or copy files to the GenZD folder under "On my iPhone" or "On my iPad". Configurations called "Launch Configurations" can be created using a base game file as well as additional MOD files (.pk3 and .zip files). A plethora of content developed by the community is available on the web, and almost all "mods" that use the UDMF or WAD formats are supported. GenZD Zero supports any "WAD"s and "mods", but is limited to 3 launch configurations and supports one touch configuration layout. Upgrading to the full version will unlock unlimited launch configurations and custom touch control layouts. Additional features: - Game controller support: PS4, PS5, Xbox One, Nintendo Switch, mFi - On-screen touch virtual gamepad and virtual keyboard - Customizable touch controls: Rearrange buttons, change color and size. Support for saving multiple layouts. - Gyroscope aiming - Widescreen Metal graphics rendering using MoltenVK - Add your own game and mod files via the Files app - Accessibility: Supports VoiceOver and mods that support accessibility - Local Multiplayer: Host a co-op or deathmatch game, discover hosts running GenZD automatically on the same network and join a game
ModifAi
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ModifAi — Modify Your Car Before You Buy It. See how your car looks in seconds — before installing new wheels, ordering a body kit, or getting a paint job. ModifAi uses AI to transform your car photo into a realistic modification simulation. HOW IT WORKS Take a photo of your car or pick one from your gallery Add the parts you want from the catalog Start the build — AI results are ready in moments MODIFICATION CATEGORIES Wheels — A wide range of wheel styles and sizes. Body Kit — Front bumper, front grille, front lip, headlights, fog lights, hood, side skirts, overfenders, rear bumper, rear diffuser, and tail lights. You can select multiple parts at once. Spoiler — Various wing and spoiler models. Paint — Color and wrap alternatives. FEATURES • Realistic AI visualization • Large and continuously updated parts catalog • Apply multiple modifications at once • Save past builds and revisit them anytime • Turkish and English interface MODIFAI PRO Upgrade to a Pro subscription for 5 builds per month. • Subscription name: ModifAi Pro — Monthly • Subscription length: 1 month, auto-renewing • Subscription is managed through your Apple ID account • Payment is charged to the account linked to your Apple ID at purchase confirmation • Subscription automatically renews unless cancelled at least 24 hours before the end of the current period • You can cancel anytime from Settings > Apple ID > Subscriptions Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: ModifAi at every 2 days against GenZD Zero's every 2 weeks. On price, ads, in-app purchases and device support 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. GenZD Zero sells 1 one-off in-app purchase and ModifAi sells 1 in-app purchase, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
GenZD Zero ships an update every 2 weeks, ModifAi every 2 days. The most recent releases landed on October 24, 2026 and October 3, 2026 respectively.
| Parameter | GenZD Zero | ModifAi |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (43 ratings) — better | — |
| Positive reviews | 65.6% of reviews | — |
| Number of ratings | 43 — better | — |
| Update frequency | Every 2 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 70 MB | 46 MB |
| Age rating | 12+ | 4+ |
| Developer | Yoshinobu Sugawara | Emre Harman |
In-app purchases
GenZD Zero
- Full Version Upgrade$2.99
ModifAi
- ModifAi Pro$9.991 Month









