Bubble Level + Compass Pro vs Contest Queue
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bubble Level + Compass Pro
This utility app provides a precise spirit level and compass for your iPhone and Apple Watch. Get live readings on your wrist, even when your phone's screen is out of sight. Features include bullseye, horizontal, and vertical levels with 0.1-degree precision.
- Bullseye, horizontal, and vertical levels
- 0.1-degree precision
- True and magnetic heading
- Apple Watch companion app
- Gyro or accelerometer sensor mode
- Red-light night mode
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Bubble Level + Compass Pro combines a precise spirit level, compass, and Apple Watch companion app, so when your phone is placed somewhere hard to see its screen, you can still get live readings from your wrist. No more out-of-reach setups, and no more crouching. Features: • Bullseye level plus horizontal and vertical levels with 0.1 degree precision • Bubble level units: Angle (degrees) or Incline/Slope (%) • True and magnetic heading with direction text • Magnetic declination • Apple Watch companion app • Gyro or accelerometer sensor mode • Gyro calibration offset to compensate for camera bulge or uneven phone cases • Pitch/Roll/Yaw rotation rate readouts • Compass calibration status • Red-light night mode The tool is normally included in my astronomical app (Polar Scope Align Pro), but I decided to release it as a separate app because I could not find anything with the features I wanted on the app store. (A free ad-supported version is also available)
Contest Queue
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Contest Queue keeps a barbershop contest running on time. One app holds the whole contest - competitors, hosts, stage managers, judges and presenters - and shows every one of them the same live information, in the view that fits their job. THE PATTERN KEEPS ITSELF CURRENT The pattern is the heart of it: who performs, where they need to be, and when. Add your competitors and warm-up rooms, drag them into their order of appearance, and Contest Queue builds the pattern for you; arrival, check-in, photos, warm-up and stage times, all worked backwards from the moment each competitor steps on stage. Then it maintains itself. The stage manager logs on- and off-stage times, Contest Queue works out whether you are ahead or behind, and every competitor's schedule shifts to absorb the delay. Nobody redoes the math in a hallway. A VIEW FOR EVERY ROLE • Competitors see the contest live from anywhere, and know exactly when to be where. No account needed. • Hosts check competitors in quickly. Anyone running late is flagged in red, and one tap calls their contact. • Stage managers log on and off stage, mark who is backstage and ready, and leave notes for the team. • Judges get a stripped-down view of who is next, with a green light to signal they are ready. • Presenters get the names, hometowns and details an emcee needs to work the crowd. • Admins get all of it, plus the setup behind it. NOTIFICATIONS WORTH KEEPING ON Tap the bell on any competitor for a heads-up before they take the stage, and an update if the running order slips. Link your account to a competitor and you will get check-in reminders too. Organizers can post announcements and notices to the whole convention. Notification Settings is one screen listing everything you will be told about, and how to turn any of it off. FOR ORGANIZERS • Build a convention with as many contests, quartets, choruses, judges and rooms as you need • Import competitors, judges, rooms and schedules from CSV • Keep convention events and rehearsals alongside the contests • Enter scores by hand, or photograph a score sheet and let Contest Queue read it • Publish live stream and score sheet links • Export a printable Order of Appearance carrying your convention's logo • Grant staff access by role, and let competitors link their own accounts with a claim code Start with a free trial. When you are ready, a convention is priced by how many competitors it has. FREE TO FOLLOW Watching costs nothing and needs no account. Anyone can open the Order of Appearance, follow along live, and see who is on stage right now. Built for barbershop conventions, and at home in any singing contest that runs on a schedule.
Screenshots
Verdict
The clearest difference is price: Contest Queue at Free against Bubble Level + Compass Pro's $0.99. Contest Queue also leads on update cadence (every 4 days vs every 17 months). Bubble Level + Compass Pro's advantage is iOS requirement (12.0 vs 15.0). On ads, in-app purchases 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
Contest Queue is free to download; Bubble Level + Compass Pro costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Bubble Level + Compass Pro ships an update every 17 months, Contest Queue every 4 days. The most recent releases landed on October 10, 2026 and October 4, 2026 respectively.
| Parameter | Bubble Level + Compass Pro | Contest Queue |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (22 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 22 — better | — |
| Update frequency | Every 17 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 7 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Dimitrios Kechagias | Mike Nelson |
In-app purchases
Bubble Level + Compass Pro
No in-app purchases
Contest Queue
No in-app purchases
Questions
Is Bubble Level + Compass Pro free?
Is Contest Queue free?
Do Bubble Level + Compass Pro or Contest Queue have ads?
Which is updated more often, Bubble Level + Compass Pro or Contest Queue?
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