Slo vs Letsplay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Slo
Easily create slow-motion videos and fun photo strips. Save and share your creations directly to social media or your camera roll. Offers a free version with a watermark and an in-app purchase to remove it.
- Create slow-motion videos
- Make fun photo strips
- Save videos to camera roll
- Share to Facebook and Instagram
- Watermark removal via in-app purchase
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Use Slo-mo Booth to film your own slow motion videos and create fun photo strips. Slo-mo Booth makes it easy to save your videos to your camera roll and share on Facebook or Instagram right from the app. With a 5s or above, Slo-mo Booth shoots at a high frame rate, but plays back at the normal frame rate for great slow motion videos. For phones that don’t support high frame rate recording, Slo-mo Booth shoots at the normal frame rate and plays back at a slower frame rate to create slow motion GIF-like videos. Also just like a normal photo booth, you can create fun photo strips by using the photo feature to take four photos and save them into a classic photo strip. You can easily save them to your camera roll or share on Facebook or Instagram right from the app. The free version of Slo-mo Booth inserts a watermark on the video. Through an in-app purchase you can remove the watermark.
Letsplay
Record your reactions and voice-overs while watching videos or streaming content. This app allows you to create commentary, reviews, tutorials, and more by dubbing over existing videos in real-time.
- Record video commentaries in real-time
- Capture YouTube reactions
- Dub over videos in real-time
- Record multiple audio clips
- Voice-only recording option
- Easy video editing controls
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Watch videos or stream Youtube content and capture your recorded reactions with Let's Play. The best live video in video recording app for the iPhone. Record PewDiePie inspired game play videos, create product reviews, game walkthroughs, tutorials and more. Simply select a video you have stored on your phone (something you have shot yourself or a screen recording) or search for a Youtube video and dub over it in real time as it plays back. • Record video commentaries in real time while watching videos. • Now you can record Youtube reactions! • Easy controls for editing videos. • Record multiple clips over your video and tweak them individually. • Only want voice, well Let's Play does that too. Have problems, questions or feedback? Email us at hello@mudpiestudios.com
Screenshots
Verdict
The clearest difference is price: Slo at Free against Letsplay's $1.99. Slo also leads on review sentiment (50% vs 39%) and iOS requirement (7.1 vs 14.0). Letsplay's advantage is rating (3.4 vs 1.0) and in-app purchases (none vs 1). On update cadence, ads 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
Slo is free to download; Letsplay costs $1.99 up front. Slo sells 1 one-off in-app purchase. Letsplay asks for nothing beyond the download.
Letsplay holds the better App Store score, 3.4 against 1.0. That said, the two scores are not equally well evidenced: Letsplay has 33 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 50% of Slo's written reviews are positive against 39% of Letsplay's, so the app with the better star average is not the one people write more warmly about.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 10, 2026 and October 26, 2026 respectively.
| Parameter | Slo | Letsplay |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 1.0 (2 ratings) | 3.4 (33 ratings) — better |
| Positive reviews | 50.0% of reviews — better | 39.3% of reviews |
| Number of ratings | 2 | 33 — better |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | — | #187 — better |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 7.1 — better | 14.0 |
| Further details — not scored | ||
| Size | 3 MB | 59 MB |
| Age rating | 4+ | 4+ |
| Developer | Rien Heald | rory O'logan |
Customer experience
Slo
Letsplay
Bugs and requests
Slo
Not enough reviews yet to summarise bugs or requests.
Letsplay
Reported bugs
12 issues- Cannot hear video while recording reaction
- Send button remains greyed out
- App crashes
- Screen not full screen
- Volume issues
Show 7 moreShow fewer
- App locks up phone
- Cannot record gameplay
- Confusing interface
- Audio quality issues
- Cannot record from camera roll
- Crashes on longer videos
- Cannot record live
Requested features
12 requests- Allow recording audio while reacting
- Improve sound quality
- Add face cam in actual app
- Record gameplay
- Allow recording from camera roll
Show 7 moreShow fewer
- Make it easier to understand/use
- Record live
- Record computer screen
- Add option to pause video while recording
- Allow video reactions from YouTube
- Remove watermarks
- Fix crashing on longer videos
In-app purchases
Slo
- Slo-mo Booth Premium$1.99
Letsplay
No in-app purchases
