Is there a file converter without a subscription?

Not because conversion got expensive. Because of arithmetic.

A file converter is, for almost everyone, an occasional-use tool. You need it when a form rejects your HEIC, when a car stereo will not read an M4A, when someone sends you a RAR. That might be four times a year. It is a spanner, not a streaming service.

Sold once, a spanner earns a few dollars per customer, ever. Sold as a subscription, the same spanner bills the same customer fifty-two times a year — and a $4.99 weekly subscription, which is a real and common price point in this category, extracts $259 a year from someone who wanted to convert a photo. The recurring model is worth an order of magnitude more per install, and it does not require the app to be an order of magnitude better. So the market filled up with them.

The tell is the mismatch: any app whose billing frequency vastly exceeds its usage frequency is charging you for the option to use it, not for using it.

None of this is illegal and most of it is not even unusual. It is just designed to be difficult to see at the moment you tap:

• The price appears after the work. You pick your file, choose your format, watch a progress bar reach 100% — and only then meet the paywall. Sunk cost is doing the selling.
• A 3-day trial that becomes a weekly subscription. Short enough to forget, expensive enough to matter, and the reminder arrives after the charge.
• "Free" in the store listing, unusable when installed. Free to download, not free to use, and the distinction is only made once you are inside.
• "Unlock full version" that is actually a subscription. The word "unlock" implies a purchase. Read the small text under the button, always.
• Quotas. Three files a day, or two minutes of video. As covered in do converter apps upload your files, a quota usually means someone is paying per gigabyte of server time — which tells you where your file is going, as well as where your money is.

We would rather tell you this than have you take our word for anything else on this site. If one of these does the job, you do not need a converter app at all — including ours.

Shortcuts (free, made by Apple, already installed). The one most people do not know about. Its Convert Image action converts between the image formats iOS can natively encode — JPEG, PNG, TIFF, HEIF and others — and Encode Media re-encodes audio and video. Build a one-step shortcut, add it to your Share Sheet, and you have a free, entirely on-device HEIC-to-JPG converter forever.

Its limits are the same platform limits every app faces: it cannot produce MP3 or WebP, because iOS has no encoder for either and Shortcuts uses the same system encoders as everyone else. It does not do archives, documents or batch UIs, and it is fiddly to set up. But it is free, private, and for HEIC to JPG entirely sufficient.

The Files app (free). Long-press to compress to ZIP; long-press a .zip to uncompress. It does not handle RAR or 7z — see opening RAR on iPhone.

Settings, for the HEIC problem specifically. If the only reason you want a converter is that photos come out as HEIC, stop them being HEIC at source: Settings > Camera > Formats > Most Compatible shoots JPEG directly. Free, permanent, no conversion involved. Trade-offs in what is HEIC.

A Mac, if you have one. Preview converts images and PDFs; the Music app makes MP3s, which an iPhone cannot. Both free.

Desktop open source. HandBrake for video, ffmpeg for anything at all, ImageMagick for images — free, unlimited, local, and steeper to learn.

The free tools run out of road in predictable places: formats the operating system cannot encode (MP3, WebP), archives beyond ZIP (7z, RAR), batch conversion with a real interface, camera RAW, document format juggling, and the general problem that Shortcuts is a programming environment wearing a friendly hat.

That is the space a converter app has to justify itself in — and it should charge accordingly. An occasional-use tool should have an occasional-use price: you buy it, you own it. A converter that runs on your device has no ongoing cost to fund — no servers, no bandwidth, no storage — so a recurring charge is not paying for anything recurring. That is the real argument against subscriptions here, and it is an argument from cost structure, not from vibes.

Stated plainly, because that is the entire point:

• 14-day free trial. Everything works. No card, no account, no sign-up.
• Then a one-time $4.99. Once. Not per year, not per month, not per week.
• No subscription, no ads, no account, no tracking, no upload.
• Free forever, without buying anything: PDF merge and split, the QR code generator, archive compress and extract, file checksums, and opening encrypted files. Those tools do not expire when the trial does.

If the free trial ends and you decide it was not worth $4.99, that is a perfectly reasonable conclusion and you keep the free tools anyway.