Yay vs Time Flow Sketch
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Yay
Easily transform your photos with a variety of creative AI filters. Apply whimsical animations, caricatures, vintage styles, or comic book effects with a single tap. Perfect for social media or just having fun with your pictures.
- AI-powered photo transformations
- Animated scenes
- Caricature effects
- Vintage photo styles
- Comic book filters
- Printable coloring pages
- New styles added regularly
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Transform your everyday photos with our collection of fun AI filters! Our photo app gives you the power to reimagine your pictures in all kinds of creative styles with just a tap. Play with these cool transformations: • Whimsical animated scenes with dreamy watercolor skies and charming details • Fun caricatures that playfully exaggerate what makes you unique • Cool vintage photos that make it look like your pic was taken decades ago • Comic book style that gives your everyday moments superhero energy • Coloring book pages you can actually print and color in! • ...and we're adding new styles all the time! Our AI does all the hard work, so you just snap a photo, pick a style, and watch the magic happen! Each filter preserves what's special about your original pic while adding that creative wow-factor. Perfect for spicing up your social media, surprising friends with stylized versions of your group photos, or just having fun seeing your world through different creative lenses. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Time Flow Sketch
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A sketching app for reshaping the way time flows inside a video. You draw the shape of that flow as a black-and-white gradient over the clip you loaded. The brightness you paint becomes a moment in the clip, or a playback speed, so different parts of the image start running on their own time. Only where your finger traced runs ahead. Another part plays backwards. One area stays frozen while everything around it keeps moving. You can even draw time that twists — forward and backward unfolding at once. Take the single, even flow of time in a video, pull it apart, and put it back together. Reflections shifting on water, drifting clouds, the movement of familiar things and creatures: there may be something new waiting in the everyday scenery you thought you knew. ■ Main features [Making a map] • Draw — trace with a finger to draw the flow of time. Five brush tones, a bleed brush, and a smudge tool • Gradients and presets — start from a regular pattern • From motion — build the shape of time automatically from the movement in the clip • Cut & slide — split the map along a line and slide the pieces to make time slip [How the map is applied] • Apply mode — Vertical / Horizontal slit works band by band, Surface works pixel by pixel • Time map — brightness sets which moment of the clip is shown; black is the start, white is the end • Rate map — brightness sets the playback speed, from reverse to fast forward • Space map — brightness sets where on screen the picture is taken from [Checking what you made] • 3D plot — see the shape of time as a solid • Time graph — see time, rate and space as line charts [Live camera] • Time-shape the camera image as you film — it keeps the last few seconds, so the map you draw can show the past or freeze parts of the picture • Tap “Stop & capture” to turn it into a clip you can edit and export [Sound and export] • Sound — the audio goes through the same time processing as the picture • Export — save the result to your photo library as a video All video processing happens on your device, and nothing you make is sent anywhere.
Screenshots
Verdict
The clearest difference is in-app purchases: Time Flow Sketch at none against Yay's 5. Time Flow Sketch also leads on update cadence (daily vs weekly). 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. Yay sells 5 in-app purchases, starting at $6.99 per 7 days. Time Flow Sketch asks for nothing beyond the download.
Yay ships an update weekly, Time Flow Sketch daily. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.
| Parameter | Yay | Time Flow Sketch |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (7 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Weekly | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 33 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Killbridge Ventures | Ryu Furusawa |
In-app purchases
Yay
- Yay Pro Weekly3 Days trial$6.997 Days
- Yay Pro Annual3 Days trial$39.991 Year
- 25 Credits$3.99
- 100 Credits$12.99
- 500 Credits$59.99
Time Flow Sketch
No in-app purchases









