Chattr Discount Code — 75% off month one: unlimited for £3.75

£3.75 buys a month of unlimited 5G data on Chattr. That is the effect of HONEST75, a discount code that takes 75% off the first payment on any Chattr plan, and on Freedom One — Chattr's unlimited data, calls and texts plan — it turns £15 into £3.75.

Code: HONEST75 Link: https://topreferrals.co.uk/go/chattr

Open the link, choose a plan, and type the code into the promo code box at checkout. The discount shows before you pay.

Four plans, two prices each

Chattr keeps its range short: three data plans and one unlimited plan, each with unlimited UK calls and texts. The code changes the first month; the plan price applies after that.

Plan	Data	Month one with HONEST75	From month two
Freedom One	Unlimited 5G	£3.75	£15, then £14, then £13
Chattr 50GB	50GB	£3.00	£12
Chattr 25GB	25GB	£2.75	£11
Chattr 6GB	6GB	£2.50	£10

The top two rows explain why Freedom One is the plan to look at first: unlimited costs £3 a month more than 50GB, and the gap narrows as the loyalty prices arrive.

A price that falls instead of rising

Chattr's Freedom One is priced to fall rather than rise. After the standard £15, it moves to a £14 loyalty price and then to a £13 VIP price from month 12, where it stays.

Chattr's pages give two slightly different timetables. The homepage shows £15 for months 1 to 5 and £14 from month 6; the Parents Hub shows £15 for months 1 to 6 and £14 from month 7. Both put the £13 price at month 12. The direction is the same on either schedule: down.

Twelve payments on unlimited data

A monthly price only means something next to the alternatives. Adding up the first 12 payments on each network's unlimited plan, at the prices published on each network's own site in September 2026:

Network	Unlimited plan	First 12 payments
Chattr, with HONEST75	Freedom One	about £161
Lebara	Unlimited Data, 12-month plan	£270
Lyca Mobile	24 Month Unlimited contract	£162
Lyca Mobile	UK Plan Unlimited, 30-day	£287.50
1pMobile	Unlimited, yearly bundle or every 30 days	£275 to £300
VOXI	Unlimited	£420

Chattr's figure is £3.75, then the £15, £14 and £13 prices: £160.75 on the homepage timetable, £161.75 on the Parents Hub one. Lyca Mobile's 24-month contract comes closest at £162, but it costs £216 in year two against Chattr's £156, and Chattr asks for no contract. Every other unlimited plan here costs more than £100 more over the first year. For VOXI's own offer, see the VOXI referral.

Who is behind Chattr

Chattr is run by Kashcow Ltd, a company registered in England under company number 08889583 at 189 Chapel Street, Salford. It is an online-only brand that calls itself a new company dedicated to the best prices possible, with customer care answered by people.

The network side is shared. Chattr sells plans on O2 and on Vodafone; its FAQ explains that the contract is with Chattr but customers can sit on different networks, so the SIM card may carry either name. Chattr quotes 99% 4G and 5G UK coverage, and O2-network customers receive O2 Priority, with its high-street discounts, prize draws and priority tickets.

Ordering and activating

The order takes a few minutes and runs entirely online:

1. From https://topreferrals.co.uk/go/chattr, pick a plan and tap Get Your SIM.
2. Create your account. Chattr asks you to confirm you are 18 or over and to choose your phone's make and model — it sends an eSIM by default and uses the model to check compatibility.
3. Enter HONEST75 at checkout and pay the reduced first month.
4. Activate. An eSIM arrives as a QR code; a physical SIM usually takes one to three days. Scan the QR code, log in and enter the last four digits of the SIM serial number.

Your next payment falls one month plus three days after the order, which leaves time for delivery and activation before the first full month begins. Your phone needs to be unlocked; Chattr's FAQ puts the cost of unlocking a phone at a retailer at around £10 to £15.

Safeguards on the bill

Three rules in Chattr's terms keep costs predictable:

• A £5 bill limit is on every account by default, so charges outside the plan stop at £5 unless you add a bolt-on.
• No contract. Turn off auto-renew and the plan ends at the close of the current month, with no exit fee.
• Fourteen days to change your mind. Cancel within 14 days of activation and Chattr refunds the plan less the days used.

Upgrading takes effect straight away, with a pro-rata charge on the next bill; a move to a smaller plan needs 30 days' notice. Bolt-ons are managed from the SIMs and plans section of the account.

Keeping or moving your number

To bring a number across, text PAC to 65075 on your current network and add the PAC when you activate. Chattr moves numbers within one working day, Monday to Friday. Leaving works the same way in reverse: email Chattr for a PAC, which it issues within one working day.

Travelling with Chattr

Chattr's plans roam like at home in 43 destinations. That covers every EU country — including the Canary Islands, Madeira, the Balearics and France's overseas departments — plus Iceland, Norway and Liechtenstein, and a second zone of Guernsey, Jersey, the Isle of Man, the Faroe Islands, San Marino and Switzerland. Calls and texts to UK numbers, calls within the zone and incoming calls are included; data abroad sits under a fair-use policy, and calls from the UK to international numbers are charged separately.

Chattr has also announced Chattr Travel, a travel eSIM priced from £2.50 for more than 200 countries, with 25% of its profits going to nature. On 23 September 2026 it was listed as coming soon.

Buying for a child

Chattr's Parents Hub argues that unlimited data is the plan that prevents bill shock, and backs it with its own figures per hour of use: roughly 600MB for gaming, 1GB for TikTok, 1.5GB for YouTube and 3GB for video streaming. An hour a day of any of them outgrows the 6GB plan within a month, and an hour of TikTok, YouTube or streaming outgrows 25GB. With the account holder aged 18 or over, a parent orders the SIM; Freedom One, the £5 bill limit and the absence of a contract then do the work.

Looking for a Chattr voucher?

People reach this page through several different searches. Here is what each one turns into:

Search	Answer
Chattr discount code	HONEST75: 75% off the first month
Chattr promo code	The same code, typed at checkout
Chattr voucher code	HONEST75 — there is no separate voucher
Chattr coupon	HONEST75, with the plan chosen from https://topreferrals.co.uk/go/chattr
Chattr £3.75	Freedom One's first month with the code
Chattr loyalty price	£14, then £13 from month 12, applied automatically

What we checked

HONEST75 was run through Chattr's own checkout on 24 September 2026 and came back as 75% off, first month only, accepted in capitals or lower case. The plan prices were re-read from Chattr's plans on the same day; the loyalty timetables, roaming list, bill limit, cancellation window and ordering steps come from Chattr's homepage, Parents Hub, plans FAQ, How to Get Started page and terms and conditions. The company details come from Chattr's footer and terms. The rival figures in the twelve-payment table come from each network's own site in September 2026.

That work is the difference between this page and the rest of the search results. Voucher sites fill their Chattr pages with codes they have never typed and dates they never update, and social posts pass round expired offers with no terms attached. HONEST75 is not listed on voucher or coupon sites. Here it sits in plain text, tested, with the link beside it and the date of the last check at the top of the page.