Charge Key vs Score Arcs
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Charge Key
This app allows you to unlock, lock, and start your vehicle using your phone. It offers hands-free unlocking when you approach your car and can navigate you to its location if you've misplaced it. The platform prioritizes user privacy by not storing personal information.
- Unlock vehicle
- Lock vehicle
- Start vehicle
- Hands-free unlock
- Navigate to vehicle location
- Privacy focused
Read full descriptionHide full description
Access and charge your vehicle with Charge Key. Charge Key is a platform designed to easily unlock, lock, and start your vehicle. Setup hands-free unlock to simply approach the vehicle to unlock and begin driving. Don’t remember where your vehicle is? Open Charge Key to navigate to the vehicle’s location. Before your access has expired, verify you have collected all of your belongings! Privacy: • Charge Key does not store information that is linked to you. • Charge Key doesn't need to be open on your phone — data comes directly from the vehicle. • Charge Key works wherever in the world you drive. Charge Key was made by Tesla enthusiasts and is not endorsed by Tesla, Inc in any way. Terms & Conditions: https://www.chargekey.app/terms-conditions Privacy Policy: https://www.chargekey.app/privacy-policy
Score Arcs
Read full descriptionHide full description
You sang it. Now watch the arc. Every barbershop contest you've competed in is a data point and most of them are sitting in a folder of paper scoresheets. Score Arcs turns them into a line you can actually read: your scores across every contest, so improvement (or a rough outing) is obvious at a glance. The heart of the app is a competitor: your quartet, your chorus, or any a cappella group you follow. Each one builds a history, and the history draws the arc. SNAP THE SHEET, SKIP THE TYPING Photograph a contest's scoring analysis sheet and Score Arcs reads the whole panel, every song, every judge, every category, into a draft you check and save. No re-keying forty numbers off a page. THE WHOLE PANEL, NOT JUST THE TOTAL A contest here isn't one number. It's rounds, the songs within each round, and every judge's score in every category, plus penalties and placement. Every total you see is calculated from the panel by the rules of the scoring system; nothing is hand-typed, nothing is fudged. BHS, HARMONY INC AND SINGUNITED BUILT IN Each with the right categories, scale and roll-up. Singing under something else? Define your own scoring system. GO DEEPER THAN THE SCORE • Follow one song across every contest you've sung it in • See which songs actually score best for you • Compare two or more competitors side by side • Set a goal score and watch the arc climb toward it • Keep what each judge told you in evals, attached to the contest it came from SHARE IT WITH YOUR QUARTET Send your quartet, your director or your coach a link. They see the same history and you decide who can add scores and who just watches. YOURS, WHEREVER YOU SING Works fully offline, no account needed. But if you sign in then your competitors backup and sync across your devices. Available in English, Spanish, German and Swedish.
Screenshots
Verdict
The clearest difference is price: Charge Key at Free against Score Arcs's $1.99. Score Arcs's advantage is device support (3 vs 1). On update cadence, ads, in-app purchases 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
Charge Key is free to download; Score Arcs costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Charge Key ships an update fortnightly, Score Arcs every 9 days. The most recent releases landed on November 8, 2026 and November 10, 2026 respectively.
| Parameter | Charge Key | Score Arcs |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 3.7 (33 ratings) — better | — |
| Positive reviews | 46.2% of reviews | — |
| Number of ratings | 33 — better | — |
| Update frequency | Fortnightly | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 24 MB | 45 MB |
| Age rating | 17+ | 4+ |
| Developer | ChargeKey, LLC | Mike Nelson |
In-app purchases
Charge Key
No in-app purchases
Score Arcs
No in-app purchases









