ArrowMetrics vs SP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ArrowMetrics
Calculate and compare arrow builds before investing time and money. The free version offers essential calculations for weight, FOC, kinetic energy, momentum, speed, and spine. Future updates will introduce advanced features for subscribed users.
- Arrow build calculation
- Front of Center (FOC) evaluation
- Kinetic energy and momentum calculation
- Arrow speed and spine analysis
- Pre-build planning tool
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A one stop app to calculate, evaluate and compare arrow builds. It’s an intuitive tool where you can plan your arrow build before you spend the time and money to build it. Currently, the free version helps with total arrow weight, Front of center, kinetic energy, momentum, speed and spine calculations. The subscribed version is planned to have predictability of FOC and arrow build comparisons in the most critical metrics and more.
SP
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SP-DrillCounter is a specialized drill timer designed for training with repeating crossbows. The app helps you accurately measure loading and shooting sequences and systematically improve your speed during training. Whether you train with a Stinger 6, M10, Adder, Revo 7 or Interceptor – SP-DrillCounter enables structured and measurable drill sessions. Features: ▶ Precise drill timer ▶ Start your drill and accurately measure the duration of each training run ▶ Training tracking ▶ Record time and number of shots per drill to better evaluate your performance ▶ Focused design ▶ A clean, minimalist interface keeps you fully focused on your training Suitable for training with: ▶ Stinger 6 ▶ M10 ▶ Adder ▶ Revo 7 ▶ Interceptor ▶ And any other repeating crossbow SP-DrillCounter is ideal for anyone who wants to measure drill speed, optimize training routines and continuously improve performance.
Screenshots
Verdict
The clearest difference is update cadence: SP at daily against ArrowMetrics's every 10 months. ArrowMetrics's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 26.2). On price, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ArrowMetrics ships an update every 10 months, SP daily. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.
| Parameter | ArrowMetrics | SP |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (7 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 10 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 26.2 |
| Further details — not scored | ||
| Size | 57 MB | 1 MB |
| Age rating | 17+ | 4+ |
| Developer | The Arrow Bro LLC | Christian Tuerling |
In-app purchases
ArrowMetrics
No in-app purchases
SP
No in-app purchases
