Comparison

ONNOA vs Satrelle Planner

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ONNOA

This app acts as a remote control for a physical camera accessory, enabling advanced time-lapse photography. It offers features like linear time-lapsing, interval ramping, and long exposure control for professional results.

Highlights
  • Remote triggering
  • Linear time-lapse
  • Interval ramping
  • Long exposure bulb mode
  • Presets
Features
Read full description

SmartTimer is a physical product from ONNOA. This app serves as a remote control for it. Stop making boring time lapses. The SmartTimer is a state-of-the-art remote shutter release and intervalometer. Connect it to your camera and create stunning images and timelapses without any limitations. With advanced features such as linear timelapsing, interval ramping, long exposures, presets and remote triggering, it is suitable for all photographers and astrophotographers who want to get the best out of their camera. Compact, easy to use and with a wide range of settings, our device is suitable for professional photographers and beginners alike. Take your photography to the next level with advanced interval control for professional results. Main features: - Linear time-lapse - Interval ramping - Long exposure bulb mode - Presets - Remote triggering

About

Satrelle Planner

Features
Read full description

Satrelle Planner shows you exactly how the stars will move before you ever press the shutter. Set your place, time, and lens, then watch the star trails arc across the frame so you can plan the shot with confidence. Three ways to plan: 2D PLANNER (free) Pick a location, date, and exposure length, then see the trails curve around the celestial pole for your camera and focal length. The Sun and Moon are shown too, at the Moon's real phase, so you know when and where they will be. PHOTO OVERLAY (free) Load a photo you already took and Satrelle lines the trails up using the photo's own location and time, so you can preview a longer exposure or a different framing. LIVE AR SKY (Satrelle Pro) Point your phone at the sky and see the trails overlaid on your live camera in real time, day or night. Match your real camera and focal length, pinch to set your lens, and save a clean preview image to share. Built for photographers, honestly: - Real astronomy from an 8,400 star catalog, not a gimmick - Accurate Sun and Moon positions, with the current Moon phase - Frame to your exact camera and focal length - Save clean preview images with your settings and the Satrelle mark - Everything runs on your device. Nothing is collected or sent anywhere. Free to plan in 2D and to overlay your own photos. Satrelle Pro is a one-time purchase that unlocks the live AR sky and camera matching. No subscription. Satrelle Planner is the mobile companion to Satrelle for Mac, the star-trail app for serious nightscape work.

Screenshots

ONNOA4 screens
Satrelle Planner4 screens

Verdict

The call

The clearest difference is in-app purchases: ONNOA at none against Satrelle Planner's 1. ONNOA also leads on iOS requirement (15.0 vs 17.0). Satrelle Planner's advantage is update cadence (every 5 days vs every 4 weeks). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Satrelle Planner sells 1 one-off in-app purchase. ONNOA asks for nothing beyond the download.

UpkeepUpdate frequency

ONNOA ships an update every 4 weeks, Satrelle Planner every 5 days. The most recent releases landed on October 1, 2026 and September 28, 2026 respectively.

Scorecard3 real differences · 7 level
ONNOA versus Satrelle Planner: the parameters behind the verdict, then further details
ParameterONNOASatrelle Planner
PriceFreeFree
Rating4.8 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 4 weeksEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size52 MB2 MB
Age rating4+4+
DeveloperONNOA GbRHAND FORGED LLC

In-app purchases

None

ONNOA

No in-app purchases

1 purchases

Satrelle Planner

One-time1
  • Satrelle Pro$9.99

Questions

Is ONNOA free?
ONNOA is free to download, with no in-app purchases.
Is Satrelle Planner free?
Satrelle Planner is free to download, with in-app purchases available.
Do ONNOA or Satrelle Planner have ads?
Neither ONNOA nor Satrelle Planner shows ads.
Which is updated more often, ONNOA or Satrelle Planner?
ONNOA ships an update every 4 weeks, and Satrelle Planner every 5 days. Most recently, ONNOA was updated on October 1, 2026 and Satrelle Planner on September 28, 2026.

Other comparisons