Peak AppsStudio Contact

Independent software studio

Useful software, finished properly.

We design, build and run our own products: invoicing and tax tools for freelancers, iOS apps, and a browser game you play with your whole body.

See the work peakappsstudios@gmail.com

We don't take client work. Every product on this page is ours: designed, built and operated in-house, and live right now. Each one does a single job, keeps accounts optional where it can, and stays maintained after launch.

Selected work

Four products, four very different problems.

BodyArcade gameplay in the Volcano world: the runner heads down a dark road toward a lean-left wall, with lava cracks glowing in the black rock on both sides.

01 / Browser game

BodyArcade

A running game you steer with your body. Your webcam tracks squats, jumps and arm raises in the browser, and the road responds.

Platform
Any modern browser with a camera
Built with
Three.js, MediaPipe Pose, Supabase Realtime
Worlds
10, from Alps to Volcano
Play BodyArcade
City world: the runner approaches a striped barrier on a night road lined with lit office towers.
City
Storm world: rain falls on a dark road through pine trees as the runner nears a wall.
Storm
Desert world: the runner jumps toward a hurdle on a road between cacti and sand under a blue sky.
Desert
Sunset world: the runner clears a low bar on a palm-lined road with the sun setting ahead.
Sunset

02 / Invoicing

GetInvoiceMaker

Invoices with the tax already right. Pick a country or province and the VAT, GST/HST or BTW line fills itself in, with a PDF ready in about a minute and no account.

For
Freelancers and small businesses
Covers
18 currencies, UK VAT, Dutch BTW, every Canadian province
Pricing
Free; Pro removes branding and adds your logo
Open GetInvoiceMaker
getinvoicemaker.com
GetInvoiceMaker: the invoice form on the left and a live invoice preview on the right.
Close-up of the live invoice preview with line items, subtotal and total due.
Canadian GST calculator
The Canadian GST calculator with a province selector and the tax breakdown.

03 / Tax records

MileageLogMaker

An IRS mileage log that knew the rate changed in July. Each trip is priced at the rate for its date (72.5¢ before July 1, 2026, 76¢ after), and the PDF shows the split.

For
Self-employed drivers, gig workers, realtors
Records
Date, destination, purpose and miles, as the IRS asks
Pricing
Free with a watermark; $9 once to remove it
Open MileageLogMaker
mileagelogmaker.com
MileageLogMaker: trip entry form, trip list and tax deduction summary.
2026 IRS mileage rate
The 2026 IRS mileage rate page explaining the July 1 change from 72.5 to 76 cents.

04 / Business risk

ClientGuard

How exposed is your business to its biggest client? Upload a revenue export, or type in your top clients, and ClientGuard scores your concentration risk, flags any client above 25% of revenue and shows the HHI.

For
Agencies, consultancies, freelancers with retainers
Input
CSV or Excel from QuickBooks, Xero or a spreadsheet
Pricing
Free risk score; full audit $39 once
Open ClientGuard
clientguard.app/sample-report
ClientGuard sample report showing a concentration risk score and client revenue breakdown.
clientguard.app
ClientGuard homepage with the free risk check next to the headline.

On the App Store

Small iOS apps, built for one moment.

Index

Everything we currently run.

  1. BodyArcadeBrowser fitness game with pose trackingGame
  2. GetInvoiceMakerInvoices with VAT, GST/HST and BTW built inWeb
  3. GetQuotationMakerQuotes with validity dates and discountsWeb
  4. MileageLogMakerIRS mileage logs priced by trip dateWeb
  5. ClientGuardCustomer concentration risk auditWeb
  6. Said by AIDoes ChatGPT recommend your brand?Web
  7. BriefbaseBriefs and approvals for UGC agenciesWeb · Beta
  8. ColoringPageMakerPrintable coloring pages from a sentenceWeb
  9. ReviewReplyDrafts replies to Google reviewsWeb
  10. Tumbler templatesFlat templates for tapered cups, and a design warpTool
  11. Name cut filesWelded name SVGs for Cricut and Silhouette, from a list or Etsy ordersTool
  12. Cone templatesTruncated cones and lampshades at true sizeTool
  13. KDP coloring booksInterior PDFs with KDP bleed, margins and blank backsTool
  14. Print only your sizeLayered PDF sewing patterns, one size at a timeTool
  15. Quilt labelsPrint-ready fabric labels with quilt-block bordersTool
  16. Etsy tax summaryYear totals and Schedule C lines from Etsy statement CSVsTool
  17. Pay gap reportStatutory gender pay gap figures for the UK, Ireland and the EU, from a payroll exportTool
  18. Pay transparency kitPay information requests for workers, Article 7 answers for employers, all 27 EU countriesTool
  19. Job evaluationPoint factor job evaluation on the EU factor plan, with categories of work of equal valueTool
  20. Equality action planGender pay gap and menopause action plans from GOV.UK’s 18 actions, with the rules checked as you writeTool
  21. Menopause adjustments at workChanges the Acas and GOV.UK guidance list, chosen by symptom, and a letter to your managerTool
  22. Without planningA house extension, garden room or heat pump checked in 3D against England’s and Ireland’s planning rulesTool
  23. Dropped kerb checkA driveway checked in 3D against your council’s dropped kerb rules and feesTool
  24. Catio designerA catio for your window, wall or balcony in 3D, with the lumber and mesh to buyTool
  25. Coop designerA chicken coop and run for your flock and yard in 3D, with the space and nest box checksTool
  26. Sim rig designerA sim racing cockpit built around your height, in 3D, in wood or aluminium profileTool
  27. Photo date fixerThe real dates and locations back in a Snapchat Memories export, in your browserTool
  28. TravioTourist scam checks while you traveliOS
  29. LeanoBody measurement trackeriOS
  30. OBBB SaverTracks the new 2025 tax deductionsiOS

How we work

A few rules we actually keep.

  1. I

    One job per product.

    An invoice tool makes invoices. A mileage log logs miles. If a feature doesn't serve that job, it doesn't ship.

  2. II

    Accounts are optional.

    Most of our tools work the moment the page loads. You sign up only when there's something worth keeping.

  3. III

    Numbers you can check.

    Tax rates and rules name their source, such as the CRA or the IRS, so you can verify them before you rely on them.

  4. IV

    Launch is the start.

    When the IRS raised the mileage rate in July 2026, MileageLogMaker changed with it. Products stay maintained after launch.

Contact

peakappsstudios@gmail.com

Product support, partnerships and press. One inbox, read by the people who build the products.