About
Archery Sight Mark is a specialized Android utility for recurve and compound archers who want to eliminate the tedious process of re-sighting their bow at every distance whenever they change arrows or adjust equipment. The app requires only three calibrated reference distances — ideally spread across the archer's shooting range (e.g., 20m, 40m, and 70m for faster bows) — and uses a quadratic regression model to extrapolate accurate sight elevations across the full shooting range. The app displays a visual graph of the archer's sight profile curve, giving instant insight into how the bow behaves across distances. A standout feature is the built-in correction calculator for uphill and downhill shots, which is invaluable for field archery and hunting scenarios where level ground is not guaranteed. The free version covers core functionality for a single sight profile. Upgrading to the Pro Edition unlocks unlimited sight profile storage (useful for archers with multiple bows or arrow setups) and the ability to generate printable PDF sight tapes — a practical resource used by competitive archers on the field. Developed by Tucana Designs, the app is a practical data-driven tool for recreational shooters, club archers, and competitive field archers who want reliable, science-backed sight management on Android.
Key Features
- Three-Point Calibration Model: Enter sight elevations at just three known distances; the app builds a quadratic regression model to predict elevations at all other distances.
- Sight Profile Curve Visualisation: Displays an interactive graph of your full sight profile, giving a clear visual overview of how your bow performs across the distance range.
- Uphill & Downhill Shot Corrections: Calculates sight corrections for angled shots, essential for field archery, 3D courses, and hunting in hilly terrain.
- Unlimited Profiles (Pro): The Pro Edition allows storing unlimited sight profiles, making it easy to manage multiple bows, arrow types, or seasonal setups.
- Printable PDF Sight Tapes (Pro): Generate and print professional-grade sight tapes for each profile, ready to attach directly to your bow's sight for field use.
Use Cases
- A club archer switching between two different arrow sets uses the app to instantly get the correct sight marks for each setup without spending extra time at the range re-sighting.
- A field archer competing on a course with hilly terrain uses the uphill/downhill correction feature to adjust sight elevations on the fly for angled shots.
- A competitive recurve archer prints PDF sight tapes via the Pro Edition to attach to their sight bar, replacing hand-written notes with a clean, precise reference strip.
- A bow hunter preparing for a trip adjusts their equipment and uses the app to recalculate their full sight profile without needing to shoot at every possible hunting distance.
- A beginner archer uses the curve visualisation to better understand how their bow's trajectory changes with distance, aiding their understanding of sight setup fundamentals.
Pros
- Saves significant setup time: Eliminates the need to physically re-sight a bow at every distance after arrow changes or equipment adjustments — a major time saver at training and competition.
- Science-backed accuracy: The quadratic regression model provides mathematically derived elevations rather than guesswork, with visual curve output to verify plausibility.
- Angle correction built-in: Uphill and downhill shot compensation is rarely found in basic archery apps and adds real practical value for field archers and hunters.
- Lightweight and offline: No account or internet connection required — works fully offline once installed, ideal for use at remote ranges and outdoor venues.
Cons
- Android only: The app is exclusively available on Android via Google Play, with no iOS, web, or desktop version available.
- Reduced accuracy outside calibration range: Predictions for distances beyond the three reference points may be less reliable, and very close calibration references (e.g., 10m) can introduce parallax errors.
- Key features locked behind Pro upgrade: Multiple sight profile storage and PDF sight tape export — two highly useful features for serious archers — require a paid Pro upgrade.
Frequently Asked Questions
How many reference distances do I need to set up the app?
You need exactly three known target distances with their corresponding sight elevation readings. The app uses these three data points to build a quadratic regression model for the full range.
What are the ideal calibration distances to use?
For bows shooting faster than 200fps, the recommended distances are approximately 20m, 40m, and 70m. Using very short distances like 10m is discouraged due to parallax effects that can skew the regression model.
How accurate are predictions outside the calibration range?
Predictions within the calibration range are generally accurate. Elevations outside the three reference points are extrapolated and may be less reliable — always verify at the range before competition.
What does the Pro Edition include?
The Pro Edition unlocks unlimited sight profile storage (versus one in the free version) and the ability to create printable PDF sight tapes for each profile.
Does the app work offline?
Yes. Archery Sight Mark works entirely offline. No internet connection or account is required after installation.
