DrillSolverTerms of Use
Effective 12 November 2026
DrillSolver is made by Spaceman Apps (2729772 Alberta Inc.), Alberta, Canada ("we", "us"). By downloading or using DrillSolver you agree to these terms.
1. The licence
DrillSolver is licensed to you, not sold, under Apple's Standard Licensed Application End User License Agreement (the "Apple EULA"). These terms add to the Apple EULA. If the two conflict, these terms apply to the extent the law allows.
2. Calculations are a tool, not advice
Read this part. DrillSolver does arithmetic on the numbers you give it, using standard drilling formulas and simplifying assumptions. It is not engineering advice, it doesn't know your well, and it can be wrong.
- Check every result before relying on it, especially for well control, kick tolerance, MAASP, kill weights, cementing and anything else that affects safety, the environment or well integrity.
- Follow your company's procedures, your engineer's program and the regulations that apply where you work. If the app disagrees with them, they win.
- Formulas have limits. Many are field approximations (the app notes the main ones, such as laminar-flow-only or single-bubble methods). A correct calculation on wrong inputs is still wrong.
- You are responsible for the decisions you make and the work you do. DrillSolver is a calculator, not a qualified person.
3. Free and Pro
The free version lets you use the calculator and a limited number of formulas. DrillSolver Pro is a one-time in-app purchase that unlocks the rest, as described in the app. Purchases are made and refunded through Apple under Apple's terms. Pro is tied to your Apple ID and can be restored on your other devices from the app's plan screen.
We may add, change or improve formulas and features over time. Specialist formula packs, if we offer them, may be sold separately from Pro and the app will say so before you buy.
4. Your data
What you enter is yours. See the Privacy Policy for what the app stores and where. You're responsible for keeping any information you enter, such as well names or locations, consistent with your employer's or client's confidentiality rules.
5. Acceptable use
Don't reverse engineer, resell or redistribute the app or its formula library except as the law allows. Formulas you write yourself are yours.
6. No warranty
To the extent the law allows, DrillSolver is provided "as is" and "as available", without warranties of any kind, including accuracy, fitness for a particular purpose and non-infringement. We don't promise the app will be error-free or always available.
7. Limit of liability
To the extent the law allows, we aren't liable for any indirect, incidental, special, consequential or punitive damages, or for lost profits, lost production, rig time, equipment, well control events, environmental damage or injury, arising from your use of or reliance on the app or its results. Our total liability for any claim is limited to the amount you paid for the app in the twelve months before the claim. Some places don't allow these limits, so some of them may not apply to you.
8. Changes and ending
We may update these terms; the date at the top will change and continued use means you accept the new terms. You can stop using DrillSolver at any time by deleting it.
9. Law
These terms are governed by the laws of the Province of Alberta and the federal laws of Canada that apply there, without regard to conflict-of-law rules. This doesn't take away any consumer protection you have under the law where you live.