Nientum vs Catch Flex
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Nientum
Embark on a 2D action-adventure musical journey. Interact with music to restore life to a silent theater, blending platforming and adventure elements.
- 2D action-adventure gameplay
- Musical interactions
- Platformer elements
- Adventure storyline
- Restore a theater
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"—To fade away... was it hope for you and me, or despair?" 『Nientum – Op.Zero』 is a 2D action-adventure music game that combines platformer, action, and adventure elements. Tune the stage through musical interactions and experience a unique journey to breathe life back into a theater that has settled in a gray stillness.
Catch Flex
A full-body camera rhythm game where your movements control the action. Play through various challenges, create your own levels, and compete with others, all without touching a button.
- Full-body tracking with a single camera
- Gesture-controlled menus
- Multiple gameplay mechanics (cut, rings, balls, stomp, slide)
- Customizable difficulty and no-fail mode
- Local split-screen versus mode
- Browser-based level editor
- Privacy-focused on-device tracking
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Your body is the controller. Catch Flex is a dance rhythm game that tracks your whole body with one camera: no VR headset, no gamepad, no wearables. Even the menus are gesture-controlled, so you never touch a button. Stand up, clear some space, and dance to the beat. MOVE TO HIT • Slash — cut blocks in the arrow's direction • Catch — snag rings with a hand or foot • Kick — boot the balls, or knock them back with a hand • Stomp — hit the floor marker right on the beat • Slide — ride the trail to the end • Dodge — duck, lean, or step over obstacles Every song mixes the moves differently, and your whole body plays, not your thumbs. VOL. 1: TEN HAND-CHARTED TRACKS Original dance music, 87 to 150 BPM: house, electro, techno. Charted for what a real body can do: everything within reach, no jumping. Play a few back to back and it's a workout. Not chasing a score? Switch on no-fail mode and just move through the whole song. SOLO OR VERSUS Chase the global leaderboards on your own, or go head-to-head in local split-screen Versus. Achievements track you from your first song to an S rank on ten different tracks. MAKE YOUR OWN LEVELS Catch Flex Editor runs in your browser — nothing to install, nothing to buy. Bring any song, chart the moves yourself, and load the level into the game. A level is a single file: open it on your device, or send it over your Wi-Fi from any browser, which is how levels reach a TV. You'll find the editor on the Catch Flex website. WHAT YOU NEED Room to move, good lighting, your full body in frame, clothes that don't blend into the background. If your device has a camera, that camera is enough. If it has none — on a TV or a console — the free Catch Flex: Controller app turns your phone into one over your Wi-Fi. Versus needs one camera or phone per player. Either way, the bigger the screen, the better every move reads from across the room. BODY TRACKING STAYS LOCAL Tracking runs locally, on your own hardware, and camera images are never saved or uploaded. When your phone is the camera, only movement data crosses your own local network — the video never leaves the phone. FREE TO START The first track is yours to keep — play it as often as you like. One purchase unlocks the rest of Vol. 1: nine more tracks, Versus and your own levels — no ads, no subscriptions, yours for good. See you on the leaderboards.
Screenshots
Verdict
The clearest difference is in-app purchases: Catch Flex at none against Nientum's 1. Nientum's advantage is update cadence (every 3 days vs fortnightly). On price, rating, ratings volume and ads 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. Nientum sells 1 one-off in-app purchase. Catch Flex asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Nientum against 5.0 for Catch Flex. Both are backed by a comparable volume of ratings — 2 and 3 respectively.
Nientum ships an update every 3 days, Catch Flex fortnightly. The most recent releases landed on November 9, 2026 and November 10, 2026 respectively.
| Parameter | Nientum | Catch Flex |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (3 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 | 3 — better |
| Update frequency | Every 3 days — better | Fortnightly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Apple TV — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 1.7 GB | 491 MB |
| Age rating | 12+ | 4+ |
| Developer | QueseraGames Co.,Ltd | Vilegacy |
In-app purchases
Nientum
- Nientum - Main Chapter$9.99
Catch Flex
No in-app purchases





