Comparison

Bullet Flight L1 vs Calccis

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

Head to head
About

Bullet Flight L1

This ballistic computer provides quick, accurate shooting solutions up to 3000 meters. It offers detailed calculations, custom weapon profiles, and real-time wind drift adjustments for precise aiming.

Highlights
  • Ballistic computation up to 3000 meters
  • Customizable weapon profiles
  • Real-time wind drift calculation
  • Scope click adjustments
  • Metric and imperial unit support
  • Built-in bullet database
Features
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This is for BulletFlight L1. There are also Level-2 and M (BulletFlight Military) versions of this app. Level-2 adds a full calculation screen where you may enter exact range and atmospheric details, the ability to generate a range-card, cosine-angle calculation, GPS functionality to get your location and download local weather information, a mil-dot range estimation feature, and the ability to use non-standard weather conditions in the calculation. Further, Level-2 and above shows impact energy, velocity, and flight time - but only on the full-calculation screen or range-card. BulletFlight Level-M (Military) version further adds the ability to calculate an actual BC based on bullet drop, two velocities, or flight time. The ability to calculate bullet stability. Bullet spin drift is added to the computation, and the Coriolis effect (Earth’s rotation) may be factored in. Knight's Armament Bullet Flt L1 is a ballistic computer that provides quick solutions in the field. BulletFlight does not output information in table format but rather dynamically gives you the solution you need now to make that shot. The app provides detailed solutions out to 3000 meters. Your weapon profile includes your scope MOA/mRad per click, and hence when you provide a range to the target, the app will simply show how many clicks you need to change the scope by for that range and wind speed. Up to five ballistic coefficients with corresponding velocity thresholds may be used for each profile to enhance accuracy, or use a single G1, G7, or G8 value. Several built-in profiles for the Army's M110 semi-automatic precision rifle, the 14.5 inch SR16 rifle, The 50 BMG M107, .308 M40A3, .308 M24, and the 6.5mm KAC PDW allow you to get started quickly. You may alter these profiles, or add new ones. This app has been in combat use by military snipers in Iraq and Afghanistan. Features: Built-in profiles for common military rifles, but easily add more custom profiles. Accurate bullet database with most major brands. 2000 meters range Fast and accurate ballistic computation using G1, G7, or G8 ballistic coefficients. Easy to use interface yet powerful and full featured. All relevant data on screen all at once. User interface designed to minimize chance of input errors. "Simple Screen" with distance wheel. Output in inches, cm, MOA, Mils, and scope clicks. Option for Meteric units. In most cases imperial and metric are visible at the same time. Direct input for scopes with either MOA or mRad metric input (such as Schmidt & Bender). Calculates 360 degree wind drift using either degree or O'Clock format input. Wind speed may be specified in either miles-per-hour or meters-per-second. Sight-in weather may be logged and stored for automatic normalization to standard conditions. So you may sight in at any temperature or altitude and later be accurate at any other temperature or altitude. Built-in help screen. --------------------------- Also see my other apps: Bullet Flight M Bullet Flight L2

About

Calccis

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Calccis is a reverse polish notation (RPN) calculator. It supports basic arithmetic, trigonometrical, logarithm and exponent calculations for real, fractional, and complex numbers. Degrees and radians can be used for trigonometrical functions. You can perform matrix calculations, too. There is an undo stack, which supports undoing and redoing the 100 latest operations. Calccis does not copy or mimic any existing physical calculators. However, the operation of the stack has been influenced by how the stack works in the 1990s Hewlett-Packard HP-48 family of calculators.

Screenshots

Bullet Flight L14 screens
Calccis3 screens

Verdict

The call

The clearest difference is price: Calccis at Free against Bullet Flight L1's $3.99. Calccis also leads on rating (5.0 vs 2.3) and update cadence (every 3 weeks vs every 4 months). Bullet Flight L1's advantage is ratings volume (3 vs 1) and iOS requirement (8.0 vs 17.6). 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

CostPrice · In-app purchases · Ads · Monetization

Calccis is free to download; Bullet Flight L1 costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Calccis holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

UpkeepUpdate frequency

Bullet Flight L1 ships an update every 4 months, Calccis every 3 weeks. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
Bullet Flight L1 versus Calccis: the parameters behind the verdict, then further details
ParameterBullet Flight L1Calccis
Price$3.99Free — better
Rating2.3 (3 ratings)5.0 (1 ratings) — better
Positive reviews33.3% of reviews—
Number of ratings3 — better1
Update frequencyEvery 4 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPodiPhone, iPad
Requires iOS8.0 — better17.6
Further details — not scored
Size2 MB1 MB
Age rating4+4+
DeveloperRunaway Technology, Inc.Jukka Aittola

In-app purchases

None

Bullet Flight L1

No in-app purchases

None

Calccis

No in-app purchases

Questions

Is Bullet Flight L1 free?
Bullet Flight L1 costs $3.99, with no in-app purchases.
Is Calccis free?
Calccis is free to download, with no in-app purchases.
Which has better reviews, Bullet Flight L1 or Calccis?
Calccis is rated higher. Bullet Flight L1 averages 2.3 out of 5 from 3 ratings, while Calccis averages 5.0 from 1 ratings.
Do Bullet Flight L1 or Calccis have ads?
Neither Bullet Flight L1 nor Calccis shows ads.
Which is updated more often, Bullet Flight L1 or Calccis?
Bullet Flight L1 ships an update every 4 months, and Calccis every 3 weeks. Most recently, Bullet Flight L1 was updated on October 23, 2026 and Calccis on October 24, 2026.

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