Snap a photo.
Get a plan, a price,
and a second opinion.
DIYDerek turns a photo of your job into step-by-step instructions, honest UK cost estimates, and a quality check on finished tradesperson work.
First analysis free No subscription Credits never expire
See it in action
Plans, prices, and verdicts, straight from the app.
How it works
Three taps from photo to confident decision.
Step 1
Snap a photo
Photograph the job you want to start, price up, or review.
Step 2
Derek works it out
Tools, ordered steps, real prices, and quality checks, in seconds.
Step 3
Decide with confidence
Know what to DIY, what to quote, and what to challenge.
What you get
One app for the whole job, start to finish.
From a photo to a real plan
Photograph the job and get clear, ordered steps, the exact tools and materials, time estimates, and the safety gotchas that actually matter.
- Ordered, time-boxed steps
- Tool and material lists
- Safety warnings up front
See DIY cost against a trade quote
Every estimate puts the itemised DIY material cost next to a typical UK tradesperson quote, so you know exactly what you save by doing it yourself.
- Itemised UK material pricing
- Typical trade quote range
- Rent-or-buy tool guidance
Matched to your skill level
Beginner, intermediate, or pro. Derek tailors the detail, from every step spelled out to just the specs, tolerances, and trade tools.
- Three experience levels
- Detail tuned to you
- No jargon unless you want it
A second opinion on finished work
Photograph completed tradesperson work for a 1-to-10 quality score and an honest check on whether the price you paid was fair.
- Quality score out of ten
- Fair-price assessment
- What could have been better
Built in
The details that make estimates trustworthy.
AR measurements
Measure a room with ARKit or RoomPlan, or type dimensions in by hand. They feed straight into the estimate.
Local UK pricing
Estimates use pricing for your region and currency, not generic national averages.
No subscription
Buy credits only when you need them. The first analysis is free and credits never expire.
Saved on device
Your projects, plans, and estimates stay on your phone, ready even when the signal isn't.
Questions, answered
What DIYDerek is, and what it costs.
What is DIYDerek?
DIYDerek is a UK iOS app that turns a single photo of a home improvement job into three things: a step-by-step DIY plan, an itemised cost estimate, and a quality review of finished work. First, photograph the job, and DIYDerek returns ordered, time-boxed steps, the exact tools and materials, and the safety warnings that matter. Second, every estimate sets the DIY material cost beside a typical UK tradesperson quote, so the saving from doing the work yourself is clear before starting. Finally, DIYDerek reviews completed tradesperson work, scoring quality from 1 to 10 and flagging whether the price was fair. For example, a fitted wardrobe might show a £715 DIY cost against a £2,200 trade quote. Room sizes captured using ARKit or RoomPlan feed straight into the figures. The first analysis is free, with no subscription and credits that never expire.
How much does DIYDerek cost?
DIYDerek costs nothing to try and runs without a subscription. First, the first project analysis, first estimate, and first job review are all free, so the app can be used properly before paying anything. Second, further analyses are paid for with credits bought in the App Store, in packs of 3, 8, or 20 credits starting at £2.99, where one credit covers one analysis, estimate, or job review. Finally, credits never expire, so a pack can be bought once and used months later. There are no recurring charges and no hidden fees, and Apple handles all billing and refunds. For example, a homeowner pricing a few jobs a year buys one small pack and stops there. This pay-as-you-go approach fits occasional DIY work far better than a monthly subscription, because most people price up a job only now and then.
How accurate are DIYDerek cost estimates?
DIYDerek estimates are built from regional UK pricing rather than generic national averages, and each one shows an itemised breakdown so every line can be checked. First, material costs are listed individually, with the typical tradesperson quote shown as a range. Second, room measurements captured using ARKit or RoomPlan feed directly into the totals for a tighter result. Finally, the figures are indicative and meant for planning and comparison, not a final quote, because real prices vary with supplier, location, access, and the condition found once work begins. For example, a bathroom refurbishment estimate narrows considerably once exact wall and floor dimensions are added. For electrical, plumbing, structural, or gas work, always confirm with a qualified tradesperson and get an on-site quote. Used this way, a DIYDerek estimate is a reliable starting point.
What DIY jobs can DIYDerek help with?
DIYDerek helps with most common home improvement and repair jobs. Typical jobs are mounting a shelf, assembling flat-pack furniture, fitting a wardrobe, tiling, painting, and assessing a bathroom or kitchen refurbishment. First, for any job DIYDerek identifies the tools and materials, lays out the steps in order, and estimates the time and cost. Second, the app highlights the points where a mistake is expensive or unsafe, so the risky stages are clear in advance. Finally, DIYDerek works in reverse too, reviewing finished work from a photo to check the quality and the price paid. For example, beginners get every step spelled out, while professionals see just the specs and tolerances, because guidance adapts to the chosen skill level. Jobs involving electrics, gas, plumbing, or structural changes should always be checked by a qualified tradesperson first.
More questions? See the support page or email [email protected].
Your first analysis is free.
Download DIYDerek and put a price on your next job in under a minute. No subscription, credits only when you need them.
