Comparison

Design Pine Span App vs The Chippy Calc

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

Head to head
About

Design Pine Span App

Features
Read full description

Design Pine is the original pre primed H3 LOSP treated pine timber for exterior use. We now bring you a Span App for the timber carpenters and builders love to use. The Design Pine Span App will help you specify/select the correct timber size and strength grade for Rafters, Roof Beams, Ridge Beams, Bearers, Joists or Posts for your next project. Design Pine F7, GL8 and GL10 is manufactured to AS 5068-2006: Timber – Finger Joints in Structural Products and AS/NZS 1328-1996: Glued Laminated structural timber. Design loads and deflection criteria have been determined from AS/NZS 1170.0:2002, AS/NZS 1170.1:2002 Structural Design Actions and AS4055-2021 Wind loads for housing. And the following Australian Standards for design: AS 1720.1-2010 Timber Structures - Design Methods and AS 1720.3-2016 Timber Structures – Design criteria for timber framed residential buildings.

About

The Chippy Calc

This app provides carpenters, builders, and DIYers with precise, visual construction calculations. It offers specialized tools for stairs, decks, rafters, and more, with support for both metric and imperial units. All calculations can be saved and accessed offline.

Highlights
  • Visual results with scaled diagrams
  • Metric and imperial unit support
  • Offline functionality
  • 14+ specialized construction calculators
  • Stair, deck, and rafter calculations
  • Linear cut list optimization
Features
Read full description

The Chippy Calc helps carpenters, builders, and DIYers work faster with precise, visual calculations. See measurements clearly on screen, switch seamlessly between metric and imperial, and keep your work saved for later — even when you are offline. Built by a qualified carpenter in Melbourne, the app focuses on real site workflows. Calculations are paired with scaled diagrams so you can verify inputs at a glance and reduce mistakes. Key capabilities: - Visual results alongside every calculation - Universal units with metric and imperial support - Works fully offline for on-site use - 17+ specialized calculators designed for construction tasks Popular calculators include: - Stair calculator for rise/run, step count, and stringer details - Decking calculator for boards, picture frames, overhangs, fascia, and screws - Rafter calculator for lengths, plumb/seat cuts, tails, and pitch for gable and skillion - Housed stringers for stopped or through housings with detailed set-out diagrams - Arc calculator for radius, diameter, chord, rise, arc length, and wall offsets - Slope and fall for gradients, ratios, levels, and drainage runs - Balustrade spacing for compliant gaps and end margins - Even spacing to distribute items with equal end gaps or center options - Linear cut list to optimize stock lengths and reduce waste - Right angle and oblique triangle solvers - Slab and concrete for holes, piers, slabs, and beams - Raked walls for precise stud lengths on sloped walls Who it is for: - Carpenters and tradies who need reliable, fast results - Builders, site supervisors, apprentices, and DIY homeowners Support: - Help guides are included for each calculator - Contact: support@thechippycalc.com - Privacy: https://thechippycalc.com/privacy Build smarter. Calculate faster. See your measurements clearly with The Chippy Calc. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Design Pine Span App3 screens
The Chippy Calc4 screens

Verdict

The call

The clearest difference is in-app purchases: Design Pine Span App at none against The Chippy Calc's 3. Design Pine Span App also leads on iOS requirement (11.0 vs 15.1). On price, update cadence, ads 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

Both are free to download. The Chippy Calc sells 3 in-app purchases, starting at $3.99 per month. Design Pine Span App asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 18, 2026 and September 22, 2026 respectively.

Scorecard2 real differences · 8 level
Design Pine Span App versus The Chippy Calc: the parameters behind the verdict, then further details
ParameterDesign Pine Span AppThe Chippy Calc
PriceFreeFree
Rating—4.5 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.1
Further details — not scored
Size74 MB79 MB
Age rating4+4+
DeveloperSilvertrees Web Development Pty LtdVike Digital Pty Ltd

In-app purchases

None

Design Pine Span App

No in-app purchases

3 purchases

The Chippy Calc

Subscriptions2
  • Monthly3 Days trial$3.991 Month
  • Annually$19.991 Year
One-time1
  • Lifetime Premium Access$79.99

Questions

Is Design Pine Span App free?
Design Pine Span App is free to download, with no in-app purchases.
Is The Chippy Calc free?
The Chippy Calc is free to download, with in-app purchases available.
Do Design Pine Span App or The Chippy Calc have ads?
Neither Design Pine Span App nor The Chippy Calc shows ads.
Which is updated more often, Design Pine Span App or The Chippy Calc?
Design Pine Span App ships an update every 2 months, and The Chippy Calc every 2 months. Most recently, Design Pine Span App was updated on September 18, 2026 and The Chippy Calc on September 22, 2026.

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